21236938

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1\times {\mathrm{523}}^1$

素因数の和:861

約数の個数: 16

約数和(自身を含む): 32446080

約数和(自身を除く): 11209142

約数列:

[1, 2, 79, 158, 257, 514, 523, 1046, 20303, 40606, 41317, 82634, 134411, 268822, 10618469, 21236938]

約数ペア:

[(1, 21236938), (2, 10618469), (79, 268822), (158, 134411), (257, 82634), (514, 41317), (523, 40606), (1046, 20303)]