65410420

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{41399}}^1$

素因数の和:41487

約数の個数: 24

約数和(自身を含む): 139104000

約数和(自身を除く): 73693580

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 41399, 82798, 165596, 206995, 413990, 827980, 3270521, 6541042, 13082084, 16352605, 32705210, 65410420]

約数ペア:

[(1, 65410420), (2, 32705210), (4, 16352605), (5, 13082084), (10, 6541042), (20, 3270521), (79, 827980), (158, 413990), (316, 206995), (395, 165596), (790, 82798), (1580, 41399)]