13561420

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1381}}^1$

素因数の和:1881

約数の個数: 24

約数和(自身を含む): 28557648

約数和(自身を除く): 14996228

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1381, 1964, 2455, 2762, 4910, 5524, 6905, 9820, 13810, 27620, 678071, 1356142, 2712284, 3390355, 6780710, 13561420]

約数ペア:

[(1, 13561420), (2, 6780710), (4, 3390355), (5, 2712284), (10, 1356142), (20, 678071), (491, 27620), (982, 13810), (1381, 9820), (1964, 6905), (2455, 5524), (2762, 4910)]