21286080

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1$

素因数の和:431

約数の個数: 168

約数和(自身を含む): 77266800

約数和(自身を除く): 55980720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 32, 36, 38, 40, 45, 48, 57, 60, 64, 72, 76, 80, 90, 95, 96, 114, 120, 144, 152, 160, 171, 180, 190, 192, 228, 240, 285, 288, 304, 320, 342, 360, 380, 389, 456, 480, 570, 576, 608, 684, 720, 760, 778, 855, 912, 960, 1140, 1167, 1216, 1368, 1440, 1520, 1556, 1710, 1824, 1945, 2280, 2334, 2736, 2880, 3040, 3112, 3420, 3501, 3648, 3890, 4560, 4668, 5472, 5835, 6080, 6224, 6840, 7002, 7391, 7780, 9120, 9336, 10944, 11670, 12448, 13680, 14004, 14782, 15560, 17505, 18240, 18672, 22173, 23340, 24896, 27360, 28008, 29564, 31120, 35010, 36955, 37344, 44346, 46680, 54720, 56016, 59128, 62240, 66519, 70020, 73910, 74688, 88692, 93360, 110865, 112032, 118256, 124480, 133038, 140040, 147820, 177384, 186720, 221730, 224064, 236512, 266076, 280080, 295640, 332595, 354768, 373440, 443460, 473024, 532152, 560160, 591280, 665190, 709536, 886920, 1064304, 1120320, 1182560, 1330380, 1419072, 1773840, 2128608, 2365120, 2660760, 3547680, 4257216, 5321520, 7095360, 10643040, 21286080]

約数ペア:

[(1, 21286080), (2, 10643040), (3, 7095360), (4, 5321520), (5, 4257216), (6, 3547680), (8, 2660760), (9, 2365120), (10, 2128608), (12, 1773840), (15, 1419072), (16, 1330380), (18, 1182560), (19, 1120320), (20, 1064304), (24, 886920), (30, 709536), (32, 665190), (36, 591280), (38, 560160), (40, 532152), (45, 473024), (48, 443460), (57, 373440), (60, 354768), (64, 332595), (72, 295640), (76, 280080), (80, 266076), (90, 236512), (95, 224064), (96, 221730), (114, 186720), (120, 177384), (144, 147820), (152, 140040), (160, 133038), (171, 124480), (180, 118256), (190, 112032), (192, 110865), (228, 93360), (240, 88692), (285, 74688), (288, 73910), (304, 70020), (320, 66519), (342, 62240), (360, 59128), (380, 56016), (389, 54720), (456, 46680), (480, 44346), (570, 37344), (576, 36955), (608, 35010), (684, 31120), (720, 29564), (760, 28008), (778, 27360), (855, 24896), (912, 23340), (960, 22173), (1140, 18672), (1167, 18240), (1216, 17505), (1368, 15560), (1440, 14782), (1520, 14004), (1556, 13680), (1710, 12448), (1824, 11670), (1945, 10944), (2280, 9336), (2334, 9120), (2736, 7780), (2880, 7391), (3040, 7002), (3112, 6840), (3420, 6224), (3501, 6080), (3648, 5835), (3890, 5472), (4560, 4668)]