21613040

素因数分解:

$2^4\times 5^1\times {\mathrm{270163}}^1$

素因数の和:270176

約数の個数: 20

約数和(自身を含む): 50250504

約数和(自身を除く): 28637464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 270163, 540326, 1080652, 1350815, 2161304, 2701630, 4322608, 5403260, 10806520, 21613040]

約数ペア:

[(1, 21613040), (2, 10806520), (4, 5403260), (5, 4322608), (8, 2701630), (10, 2161304), (16, 1350815), (20, 1080652), (40, 540326), (80, 270163)]