280236440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:333

約数の個数: 128

約数和(自身を含む): 715936320

約数和(自身を除く): 435699880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 53, 55, 61, 88, 106, 110, 122, 197, 212, 220, 244, 265, 305, 394, 424, 440, 488, 530, 583, 610, 671, 788, 985, 1060, 1166, 1220, 1342, 1576, 1970, 2120, 2167, 2332, 2440, 2684, 2915, 3233, 3355, 3940, 4334, 4664, 5368, 5830, 6466, 6710, 7880, 8668, 10441, 10835, 11660, 12017, 12932, 13420, 16165, 17336, 20882, 21670, 23320, 24034, 25864, 26840, 32330, 35563, 41764, 43340, 48068, 52205, 60085, 64660, 71126, 83528, 86680, 96136, 104410, 114851, 120170, 129320, 132187, 142252, 177815, 208820, 229702, 240340, 264374, 284504, 355630, 417640, 459404, 480680, 528748, 574255, 636901, 660935, 711260, 918808, 1057496, 1148510, 1273802, 1321870, 1422520, 2297020, 2547604, 2643740, 3184505, 4594040, 5095208, 5287480, 6369010, 7005911, 12738020, 14011822, 25476040, 28023644, 35029555, 56047288, 70059110, 140118220, 280236440]

約数ペア:

[(1, 280236440), (2, 140118220), (4, 70059110), (5, 56047288), (8, 35029555), (10, 28023644), (11, 25476040), (20, 14011822), (22, 12738020), (40, 7005911), (44, 6369010), (53, 5287480), (55, 5095208), (61, 4594040), (88, 3184505), (106, 2643740), (110, 2547604), (122, 2297020), (197, 1422520), (212, 1321870), (220, 1273802), (244, 1148510), (265, 1057496), (305, 918808), (394, 711260), (424, 660935), (440, 636901), (488, 574255), (530, 528748), (583, 480680), (610, 459404), (671, 417640), (788, 355630), (985, 284504), (1060, 264374), (1166, 240340), (1220, 229702), (1342, 208820), (1576, 177815), (1970, 142252), (2120, 132187), (2167, 129320), (2332, 120170), (2440, 114851), (2684, 104410), (2915, 96136), (3233, 86680), (3355, 83528), (3940, 71126), (4334, 64660), (4664, 60085), (5368, 52205), (5830, 48068), (6466, 43340), (6710, 41764), (7880, 35563), (8668, 32330), (10441, 26840), (10835, 25864), (11660, 24034), (12017, 23320), (12932, 21670), (13420, 20882), (16165, 17336)]