20196701680

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{563}}^1\times {\mathrm{10937}}^1$

素因数の和:11554

約数の個数: 80

約数和(自身を含む): 48192477984

約数和(自身を除く): 27995776304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 563, 656, 820, 1126, 1640, 2252, 2815, 3280, 4504, 5630, 9008, 10937, 11260, 21874, 22520, 23083, 43748, 45040, 46166, 54685, 87496, 92332, 109370, 115415, 174992, 184664, 218740, 230830, 369328, 437480, 448417, 461660, 874960, 896834, 923320, 1793668, 1846640, 2242085, 3587336, 4484170, 6157531, 7174672, 8968340, 12315062, 17936680, 24630124, 30787655, 35873360, 49260248, 61575310, 98520496, 123150620, 246301240, 252458771, 492602480, 504917542, 1009835084, 1262293855, 2019670168, 2524587710, 4039340336, 5049175420, 10098350840, 20196701680]

約数ペア:

[(1, 20196701680), (2, 10098350840), (4, 5049175420), (5, 4039340336), (8, 2524587710), (10, 2019670168), (16, 1262293855), (20, 1009835084), (40, 504917542), (41, 492602480), (80, 252458771), (82, 246301240), (164, 123150620), (205, 98520496), (328, 61575310), (410, 49260248), (563, 35873360), (656, 30787655), (820, 24630124), (1126, 17936680), (1640, 12315062), (2252, 8968340), (2815, 7174672), (3280, 6157531), (4504, 4484170), (5630, 3587336), (9008, 2242085), (10937, 1846640), (11260, 1793668), (21874, 923320), (22520, 896834), (23083, 874960), (43748, 461660), (45040, 448417), (46166, 437480), (54685, 369328), (87496, 230830), (92332, 218740), (109370, 184664), (115415, 174992)]