21815056

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{16427}}^1$

素因数の和:16518

約数の個数: 20

約数和(自身を含む): 42778512

約数和(自身を除く): 20963456

約数列:

[1, 2, 4, 8, 16, 83, 166, 332, 664, 1328, 16427, 32854, 65708, 131416, 262832, 1363441, 2726882, 5453764, 10907528, 21815056]

約数ペア:

[(1, 21815056), (2, 10907528), (4, 5453764), (8, 2726882), (16, 1363441), (83, 262832), (166, 131416), (332, 65708), (664, 32854), (1328, 16427)]