81998512

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{138511}}^1$

素因数の和:138556

約数の個数: 20

約数和(自身を含む): 163167136

約数和(自身を除く): 81168624

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 138511, 277022, 554044, 1108088, 2216176, 5124907, 10249814, 20499628, 40999256, 81998512]

約数ペア:

[(1, 81998512), (2, 40999256), (4, 20499628), (8, 10249814), (16, 5124907), (37, 2216176), (74, 1108088), (148, 554044), (296, 277022), (592, 138511)]