20678620

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{12457}}^1$

素因数の和:12549

約数の個数: 24

約数和(自身を含む): 43951824

約数和(自身を除く): 23273204

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 12457, 24914, 49828, 62285, 124570, 249140, 1033931, 2067862, 4135724, 5169655, 10339310, 20678620]

約数ペア:

[(1, 20678620), (2, 10339310), (4, 5169655), (5, 4135724), (10, 2067862), (20, 1033931), (83, 249140), (166, 124570), (332, 62285), (415, 49828), (830, 24914), (1660, 12457)]