21043030

素因数分解:

$2^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{9973}}^1$

素因数の和:10191

約数の個数: 16

約数和(自身を含む): 38060784

約数和(自身を除く): 17017754

約数列:

[1, 2, 5, 10, 211, 422, 1055, 2110, 9973, 19946, 49865, 99730, 2104303, 4208606, 10521515, 21043030]

約数ペア:

[(1, 21043030), (2, 10521515), (5, 4208606), (10, 2104303), (211, 99730), (422, 49865), (1055, 19946), (2110, 9973)]