81318736

素因数分解:

$2^4\times {\mathrm{101}}^1\times {\mathrm{50321}}^1$

素因数の和:50430

約数の個数: 20

約数和(自身を含む): 159118164

約数和(自身を除く): 77799428

約数列:

[1, 2, 4, 8, 16, 101, 202, 404, 808, 1616, 50321, 100642, 201284, 402568, 805136, 5082421, 10164842, 20329684, 40659368, 81318736]

約数ペア:

[(1, 81318736), (2, 40659368), (4, 20329684), (8, 10164842), (16, 5082421), (101, 805136), (202, 402568), (404, 201284), (808, 100642), (1616, 50321)]