80478440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1459}}^1$

素因数の和:1674

約数の個数: 64

約数和(自身を含む): 208137600

約数和(自身を除く): 127659160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 197, 280, 394, 788, 985, 1379, 1459, 1576, 1970, 2758, 2918, 3940, 5516, 5836, 6895, 7295, 7880, 10213, 11032, 11672, 13790, 14590, 20426, 27580, 29180, 40852, 51065, 55160, 58360, 81704, 102130, 204260, 287423, 408520, 574846, 1149692, 1437115, 2011961, 2299384, 2874230, 4023922, 5748460, 8047844, 10059805, 11496920, 16095688, 20119610, 40239220, 80478440]

約数ペア:

[(1, 80478440), (2, 40239220), (4, 20119610), (5, 16095688), (7, 11496920), (8, 10059805), (10, 8047844), (14, 5748460), (20, 4023922), (28, 2874230), (35, 2299384), (40, 2011961), (56, 1437115), (70, 1149692), (140, 574846), (197, 408520), (280, 287423), (394, 204260), (788, 102130), (985, 81704), (1379, 58360), (1459, 55160), (1576, 51065), (1970, 40852), (2758, 29180), (2918, 27580), (3940, 20426), (5516, 14590), (5836, 13790), (6895, 11672), (7295, 11032), (7880, 10213)]