20160981760

素因数分解:

$2^8\times 5^1\times {\mathrm{1091}}^1\times {\mathrm{14437}}^1$

素因数の和:15549

約数の個数: 72

約数和(自身を含む): 48339463536

約数和(自身を除く): 28178481776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1091, 1280, 2182, 4364, 5455, 8728, 10910, 14437, 17456, 21820, 28874, 34912, 43640, 57748, 69824, 72185, 87280, 115496, 139648, 144370, 174560, 230992, 279296, 288740, 349120, 461984, 577480, 698240, 923968, 1154960, 1396480, 1847936, 2309920, 3695872, 4619840, 9239680, 15750767, 18479360, 31501534, 63003068, 78753835, 126006136, 157507670, 252012272, 315015340, 504024544, 630030680, 1008049088, 1260061360, 2016098176, 2520122720, 4032196352, 5040245440, 10080490880, 20160981760]

約数ペア:

[(1, 20160981760), (2, 10080490880), (4, 5040245440), (5, 4032196352), (8, 2520122720), (10, 2016098176), (16, 1260061360), (20, 1008049088), (32, 630030680), (40, 504024544), (64, 315015340), (80, 252012272), (128, 157507670), (160, 126006136), (256, 78753835), (320, 63003068), (640, 31501534), (1091, 18479360), (1280, 15750767), (2182, 9239680), (4364, 4619840), (5455, 3695872), (8728, 2309920), (10910, 1847936), (14437, 1396480), (17456, 1154960), (21820, 923968), (28874, 698240), (34912, 577480), (43640, 461984), (57748, 349120), (69824, 288740), (72185, 279296), (87280, 230992), (115496, 174560), (139648, 144370)]