81613040

素因数分解:

$2^4\times 5^1\times {\mathrm{1020163}}^1$

素因数の和:1020176

約数の個数: 20

約数和(自身を含む): 189750504

約数和(自身を除く): 108137464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1020163, 2040326, 4080652, 5100815, 8161304, 10201630, 16322608, 20403260, 40806520, 81613040]

約数ペア:

[(1, 81613040), (2, 40806520), (4, 20403260), (5, 16322608), (8, 10201630), (10, 8161304), (16, 5100815), (20, 4080652), (40, 2040326), (80, 1020163)]