256431472

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{18443}}^1$

素因数の和:18541

約数の個数: 40

約数和(自身を含む): 548893440

約数和(自身を除く): 292461968

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 79, 88, 158, 176, 316, 632, 869, 1264, 1738, 3476, 6952, 13904, 18443, 36886, 73772, 147544, 202873, 295088, 405746, 811492, 1456997, 1622984, 2913994, 3245968, 5827988, 11655976, 16026967, 23311952, 32053934, 64107868, 128215736, 256431472]

約数ペア:

[(1, 256431472), (2, 128215736), (4, 64107868), (8, 32053934), (11, 23311952), (16, 16026967), (22, 11655976), (44, 5827988), (79, 3245968), (88, 2913994), (158, 1622984), (176, 1456997), (316, 811492), (632, 405746), (869, 295088), (1264, 202873), (1738, 147544), (3476, 73772), (6952, 36886), (13904, 18443)]