1640209256

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{944821}}^1$

素因数の和:944865

約数の個数: 32

約数和(自身を含む): 3628116480

約数和(自身を除く): 1987907224

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 434, 868, 1736, 944821, 1889642, 3779284, 6613747, 7558568, 13227494, 26454988, 29289451, 52909976, 58578902, 117157804, 205026157, 234315608, 410052314, 820104628, 1640209256]

約数ペア:

[(1, 1640209256), (2, 820104628), (4, 410052314), (7, 234315608), (8, 205026157), (14, 117157804), (28, 58578902), (31, 52909976), (56, 29289451), (62, 26454988), (124, 13227494), (217, 7558568), (248, 6613747), (434, 3779284), (868, 1889642), (1736, 944821)]