21000401308

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{308829431}}^1$

素因数の和:308829452

約数の個数: 12

約数和(自身を含む): 38912508432

約数和(自身を除く): 17912107124

約数列:

[1, 2, 4, 17, 34, 68, 308829431, 617658862, 1235317724, 5250100327, 10500200654, 21000401308]

約数ペア:

[(1, 21000401308), (2, 10500200654), (4, 5250100327), (17, 1235317724), (34, 617658862), (68, 308829431)]