81338680

素因数分解:

$2^3\times 5^1\times {\mathrm{1423}}^1\times {\mathrm{1429}}^1$

素因数の和:2863

約数の個数: 32

約数和(自身を含む): 183268800

約数和(自身を除く): 101930120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1423, 1429, 2846, 2858, 5692, 5716, 7115, 7145, 11384, 11432, 14230, 14290, 28460, 28580, 56920, 57160, 2033467, 4066934, 8133868, 10167335, 16267736, 20334670, 40669340, 81338680]

約数ペア:

[(1, 81338680), (2, 40669340), (4, 20334670), (5, 16267736), (8, 10167335), (10, 8133868), (20, 4066934), (40, 2033467), (1423, 57160), (1429, 56920), (2846, 28580), (2858, 28460), (5692, 14290), (5716, 14230), (7115, 11432), (7145, 11384)]