18988744960

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:485

約数の個数: 216

約数和(自身を含む): 48225481920

約数和(自身を除く): 29236736960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 43, 62, 64, 80, 86, 124, 128, 155, 160, 172, 215, 248, 256, 310, 320, 344, 359, 430, 496, 620, 640, 688, 718, 860, 961, 992, 1240, 1280, 1333, 1376, 1436, 1720, 1795, 1922, 1984, 2480, 2666, 2752, 2872, 3440, 3590, 3844, 3968, 4805, 4960, 5332, 5504, 5744, 6665, 6880, 7180, 7688, 7936, 9610, 9920, 10664, 11008, 11129, 11488, 13330, 13760, 14360, 15376, 15437, 19220, 19840, 21328, 22258, 22976, 26660, 27520, 28720, 30752, 30874, 38440, 39680, 41323, 42656, 44516, 45952, 53320, 55040, 55645, 57440, 61504, 61748, 76880, 77185, 82646, 85312, 89032, 91904, 106640, 111290, 114880, 123008, 123496, 153760, 154370, 165292, 170624, 178064, 206615, 213280, 222580, 229760, 246016, 246992, 307520, 308740, 330584, 341248, 344999, 356128, 413230, 426560, 445160, 459520, 478547, 493984, 615040, 617480, 661168, 689998, 712256, 826460, 853120, 890320, 957094, 987968, 1230080, 1234960, 1322336, 1379996, 1424512, 1652920, 1706240, 1724995, 1780640, 1914188, 1975936, 2392735, 2469920, 2644672, 2759992, 2849024, 3305840, 3449990, 3561280, 3828376, 3951872, 4785470, 4939840, 5289344, 5519984, 6611680, 6899980, 7122560, 7656752, 9570940, 9879680, 10578688, 11039968, 13223360, 13799960, 14245120, 14834957, 15313504, 19141880, 19759360, 22079936, 26446720, 27599920, 29669914, 30627008, 38283760, 44159872, 52893440, 55199840, 59339828, 61254016, 74174785, 76567520, 88319744, 110399680, 118679656, 122508032, 148349570, 153135040, 220799360, 237359312, 296699140, 306270080, 441598720, 474718624, 593398280, 612540160, 949437248, 1186796560, 1898874496, 2373593120, 3797748992, 4747186240, 9494372480, 18988744960]

約数ペア:

[(1, 18988744960), (2, 9494372480), (4, 4747186240), (5, 3797748992), (8, 2373593120), (10, 1898874496), (16, 1186796560), (20, 949437248), (31, 612540160), (32, 593398280), (40, 474718624), (43, 441598720), (62, 306270080), (64, 296699140), (80, 237359312), (86, 220799360), (124, 153135040), (128, 148349570), (155, 122508032), (160, 118679656), (172, 110399680), (215, 88319744), (248, 76567520), (256, 74174785), (310, 61254016), (320, 59339828), (344, 55199840), (359, 52893440), (430, 44159872), (496, 38283760), (620, 30627008), (640, 29669914), (688, 27599920), (718, 26446720), (860, 22079936), (961, 19759360), (992, 19141880), (1240, 15313504), (1280, 14834957), (1333, 14245120), (1376, 13799960), (1436, 13223360), (1720, 11039968), (1795, 10578688), (1922, 9879680), (1984, 9570940), (2480, 7656752), (2666, 7122560), (2752, 6899980), (2872, 6611680), (3440, 5519984), (3590, 5289344), (3844, 4939840), (3968, 4785470), (4805, 3951872), (4960, 3828376), (5332, 3561280), (5504, 3449990), (5744, 3305840), (6665, 2849024), (6880, 2759992), (7180, 2644672), (7688, 2469920), (7936, 2392735), (9610, 1975936), (9920, 1914188), (10664, 1780640), (11008, 1724995), (11129, 1706240), (11488, 1652920), (13330, 1424512), (13760, 1379996), (14360, 1322336), (15376, 1234960), (15437, 1230080), (19220, 987968), (19840, 957094), (21328, 890320), (22258, 853120), (22976, 826460), (26660, 712256), (27520, 689998), (28720, 661168), (30752, 617480), (30874, 615040), (38440, 493984), (39680, 478547), (41323, 459520), (42656, 445160), (44516, 426560), (45952, 413230), (53320, 356128), (55040, 344999), (55645, 341248), (57440, 330584), (61504, 308740), (61748, 307520), (76880, 246992), (77185, 246016), (82646, 229760), (85312, 222580), (89032, 213280), (91904, 206615), (106640, 178064), (111290, 170624), (114880, 165292), (123008, 154370), (123496, 153760)]