13213520

素因数分解:

$2^4\times 5^1\times {\mathrm{331}}^1\times {\mathrm{499}}^1$

素因数の和:843

約数の個数: 40

約数和(自身を含む): 30876000

約数和(自身を除く): 17662480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 331, 499, 662, 998, 1324, 1655, 1996, 2495, 2648, 3310, 3992, 4990, 5296, 6620, 7984, 9980, 13240, 19960, 26480, 39920, 165169, 330338, 660676, 825845, 1321352, 1651690, 2642704, 3303380, 6606760, 13213520]

約数ペア:

[(1, 13213520), (2, 6606760), (4, 3303380), (5, 2642704), (8, 1651690), (10, 1321352), (16, 825845), (20, 660676), (40, 330338), (80, 165169), (331, 39920), (499, 26480), (662, 19960), (998, 13240), (1324, 9980), (1655, 7984), (1996, 6620), (2495, 5296), (2648, 4990), (3310, 3992)]