81082040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{647}}^1$

素因数の和:912

約数の個数: 64

約数和(自身を含む): 197588160

約数和(自身を除く): 116506120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 241, 260, 482, 520, 647, 964, 1205, 1294, 1928, 2410, 2588, 3133, 3235, 4820, 5176, 6266, 6470, 8411, 9640, 12532, 12940, 15665, 16822, 25064, 25880, 31330, 33644, 42055, 62660, 67288, 84110, 125320, 155927, 168220, 311854, 336440, 623708, 779635, 1247416, 1559270, 2027051, 3118540, 4054102, 6237080, 8108204, 10135255, 16216408, 20270510, 40541020, 81082040]

約数ペア:

[(1, 81082040), (2, 40541020), (4, 20270510), (5, 16216408), (8, 10135255), (10, 8108204), (13, 6237080), (20, 4054102), (26, 3118540), (40, 2027051), (52, 1559270), (65, 1247416), (104, 779635), (130, 623708), (241, 336440), (260, 311854), (482, 168220), (520, 155927), (647, 125320), (964, 84110), (1205, 67288), (1294, 62660), (1928, 42055), (2410, 33644), (2588, 31330), (3133, 25880), (3235, 25064), (4820, 16822), (5176, 15665), (6266, 12940), (6470, 12532), (8411, 9640)]