80675980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{52387}}^1$

素因数の和:52414

約数の個数: 48

約数和(自身を含む): 211228416

約数和(自身を除く): 130552436

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 52387, 104774, 209548, 261935, 366709, 523870, 576257, 733418, 1047740, 1152514, 1466836, 1833545, 2305028, 2881285, 3667090, 4033799, 5762570, 7334180, 8067598, 11525140, 16135196, 20168995, 40337990, 80675980]

約数ペア:

[(1, 80675980), (2, 40337990), (4, 20168995), (5, 16135196), (7, 11525140), (10, 8067598), (11, 7334180), (14, 5762570), (20, 4033799), (22, 3667090), (28, 2881285), (35, 2305028), (44, 1833545), (55, 1466836), (70, 1152514), (77, 1047740), (110, 733418), (140, 576257), (154, 523870), (220, 366709), (308, 261935), (385, 209548), (770, 104774), (1540, 52387)]