131411240

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{6691}}^1$

素因数の和:7193

約数の個数: 32

約数和(自身を含む): 296321760

約数和(自身を除く): 164910520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4910, 6691, 9820, 13382, 19640, 26764, 33455, 53528, 66910, 133820, 267640, 3285281, 6570562, 13141124, 16426405, 26282248, 32852810, 65705620, 131411240]

約数ペア:

[(1, 131411240), (2, 65705620), (4, 32852810), (5, 26282248), (8, 16426405), (10, 13141124), (20, 6570562), (40, 3285281), (491, 267640), (982, 133820), (1964, 66910), (2455, 53528), (3928, 33455), (4910, 26764), (6691, 19640), (9820, 13382)]