21565340

素因数分解:

$2^2\times 5^1\times {\mathrm{613}}^1\times {\mathrm{1759}}^1$

素因数の和:2381

約数の個数: 24

約数和(自身を含む): 45386880

約数和(自身を除く): 23821540

約数列:

[1, 2, 4, 5, 10, 20, 613, 1226, 1759, 2452, 3065, 3518, 6130, 7036, 8795, 12260, 17590, 35180, 1078267, 2156534, 4313068, 5391335, 10782670, 21565340]

約数ペア:

[(1, 21565340), (2, 10782670), (4, 5391335), (5, 4313068), (10, 2156534), (20, 1078267), (613, 35180), (1226, 17590), (1759, 12260), (2452, 8795), (3065, 7036), (3518, 6130)]