81975740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53231}}^1$

素因数の和:53258

約数の個数: 48

約数和(自身を含む): 214631424

約数和(自身を除く): 132655684

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, 53231, 106462, 212924, 266155, 372617, 532310, 585541, 745234, 1064620, 1171082, 1490468, 1863085, 2342164, 2927705, 3726170, 4098787, 5855410, 7452340, 8197574, 11710820, 16395148, 20493935, 40987870, 81975740]

約数ペア:

[(1, 81975740), (2, 40987870), (4, 20493935), (5, 16395148), (7, 11710820), (10, 8197574), (11, 7452340), (14, 5855410), (20, 4098787), (22, 3726170), (28, 2927705), (35, 2342164), (44, 1863085), (55, 1490468), (70, 1171082), (77, 1064620), (110, 745234), (140, 585541), (154, 532310), (220, 372617), (308, 266155), (385, 212924), (770, 106462), (1540, 53231)]