21190420

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{22543}}^1$

素因数の和:22599

約数の個数: 24

約数和(自身を含む): 45448704

約数和(自身を除く): 24258284

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 22543, 45086, 90172, 112715, 225430, 450860, 1059521, 2119042, 4238084, 5297605, 10595210, 21190420]

約数ペア:

[(1, 21190420), (2, 10595210), (4, 5297605), (5, 4238084), (10, 2119042), (20, 1059521), (47, 450860), (94, 225430), (188, 112715), (235, 90172), (470, 45086), (940, 22543)]