201820988

素因数分解:

$2^2\times {\mathrm{157}}^1\times {\mathrm{321371}}^1$

素因数の和:321532

約数の個数: 12

約数和(自身を含む): 355437432

約数和(自身を除く): 153616444

約数列:

[1, 2, 4, 157, 314, 628, 321371, 642742, 1285484, 50455247, 100910494, 201820988]

約数ペア:

[(1, 201820988), (2, 100910494), (4, 50455247), (157, 1285484), (314, 642742), (628, 321371)]