81391312

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{32401}}^1$

素因数の和:32566

約数の個数: 20

約数和(自身を含む): 158704996

約数和(自身を除く): 77313684

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 32401, 64802, 129604, 259208, 518416, 5086957, 10173914, 20347828, 40695656, 81391312]

約数ペア:

[(1, 81391312), (2, 40695656), (4, 20347828), (8, 10173914), (16, 5086957), (157, 518416), (314, 259208), (628, 129604), (1256, 64802), (2512, 32401)]