20853870080

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^2\times {\mathrm{71}}^1\times {\mathrm{397}}^1$

素因数の和:525

約数の個数: 240

約数和(自身を含む): 53998392096

約数和(自身を除く): 33144522016

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 71, 80, 85, 128, 136, 142, 160, 170, 256, 272, 284, 289, 320, 340, 355, 397, 512, 544, 568, 578, 640, 680, 710, 794, 1088, 1136, 1156, 1207, 1280, 1360, 1420, 1445, 1588, 1985, 2176, 2272, 2312, 2414, 2560, 2720, 2840, 2890, 3176, 3970, 4352, 4544, 4624, 4828, 5440, 5680, 5780, 6035, 6352, 6749, 7940, 8704, 9088, 9248, 9656, 10880, 11360, 11560, 12070, 12704, 13498, 15880, 18176, 18496, 19312, 20519, 21760, 22720, 23120, 24140, 25408, 26996, 28187, 31760, 33745, 36352, 36992, 38624, 41038, 43520, 45440, 46240, 48280, 50816, 53992, 56374, 63520, 67490, 73984, 77248, 82076, 90880, 92480, 96560, 101632, 102595, 107984, 112748, 114733, 127040, 134980, 140935, 147968, 154496, 164152, 181760, 184960, 193120, 203264, 205190, 215968, 225496, 229466, 254080, 269960, 281870, 308992, 328304, 369920, 386240, 410380, 431936, 450992, 458932, 479179, 508160, 539920, 563740, 573665, 617984, 656608, 739840, 772480, 820760, 863872, 901984, 917864, 958358, 1016320, 1079840, 1127480, 1147330, 1313216, 1544960, 1641520, 1727744, 1803968, 1835728, 1916716, 2159680, 2254960, 2294660, 2395895, 2626432, 3089920, 3283040, 3455488, 3607936, 3671456, 3833432, 4319360, 4509920, 4589320, 4791790, 5252864, 6566080, 7215872, 7342912, 7666864, 8146043, 8638720, 9019840, 9178640, 9583580, 10505728, 13132160, 14431744, 14685824, 15333728, 16292086, 17277440, 18039680, 18357280, 19167160, 26264320, 29371648, 30667456, 32584172, 36079360, 36714560, 38334320, 40730215, 52528640, 58743296, 61334912, 65168344, 72158720, 73429120, 76668640, 81460430, 122669824, 130336688, 146858240, 153337280, 162920860, 245339648, 260673376, 293716480, 306674560, 325841720, 521346752, 613349120, 651683440, 1042693504, 1226698240, 1303366880, 2085387008, 2606733760, 4170774016, 5213467520, 10426935040, 20853870080]

約数ペア:

[(1, 20853870080), (2, 10426935040), (4, 5213467520), (5, 4170774016), (8, 2606733760), (10, 2085387008), (16, 1303366880), (17, 1226698240), (20, 1042693504), (32, 651683440), (34, 613349120), (40, 521346752), (64, 325841720), (68, 306674560), (71, 293716480), (80, 260673376), (85, 245339648), (128, 162920860), (136, 153337280), (142, 146858240), (160, 130336688), (170, 122669824), (256, 81460430), (272, 76668640), (284, 73429120), (289, 72158720), (320, 65168344), (340, 61334912), (355, 58743296), (397, 52528640), (512, 40730215), (544, 38334320), (568, 36714560), (578, 36079360), (640, 32584172), (680, 30667456), (710, 29371648), (794, 26264320), (1088, 19167160), (1136, 18357280), (1156, 18039680), (1207, 17277440), (1280, 16292086), (1360, 15333728), (1420, 14685824), (1445, 14431744), (1588, 13132160), (1985, 10505728), (2176, 9583580), (2272, 9178640), (2312, 9019840), (2414, 8638720), (2560, 8146043), (2720, 7666864), (2840, 7342912), (2890, 7215872), (3176, 6566080), (3970, 5252864), (4352, 4791790), (4544, 4589320), (4624, 4509920), (4828, 4319360), (5440, 3833432), (5680, 3671456), (5780, 3607936), (6035, 3455488), (6352, 3283040), (6749, 3089920), (7940, 2626432), (8704, 2395895), (9088, 2294660), (9248, 2254960), (9656, 2159680), (10880, 1916716), (11360, 1835728), (11560, 1803968), (12070, 1727744), (12704, 1641520), (13498, 1544960), (15880, 1313216), (18176, 1147330), (18496, 1127480), (19312, 1079840), (20519, 1016320), (21760, 958358), (22720, 917864), (23120, 901984), (24140, 863872), (25408, 820760), (26996, 772480), (28187, 739840), (31760, 656608), (33745, 617984), (36352, 573665), (36992, 563740), (38624, 539920), (41038, 508160), (43520, 479179), (45440, 458932), (46240, 450992), (48280, 431936), (50816, 410380), (53992, 386240), (56374, 369920), (63520, 328304), (67490, 308992), (73984, 281870), (77248, 269960), (82076, 254080), (90880, 229466), (92480, 225496), (96560, 215968), (101632, 205190), (102595, 203264), (107984, 193120), (112748, 184960), (114733, 181760), (127040, 164152), (134980, 154496), (140935, 147968)]