21314990

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{26981}}^1$

素因数の和:27067

約数の個数: 16

約数和(自身を含む): 38854080

約数和(自身を除く): 17539090

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 26981, 53962, 134905, 269810, 2131499, 4262998, 10657495, 21314990]

約数ペア:

[(1, 21314990), (2, 10657495), (5, 4262998), (10, 2131499), (79, 269810), (158, 134905), (395, 53962), (790, 26981)]