21099460

素因数分解:

$2^2\times 5^1\times {\mathrm{613}}^1\times {\mathrm{1721}}^1$

素因数の和:2343

約数の個数: 24

約数和(自身を含む): 44406936

約数和(自身を除く): 23307476

約数列:

[1, 2, 4, 5, 10, 20, 613, 1226, 1721, 2452, 3065, 3442, 6130, 6884, 8605, 12260, 17210, 34420, 1054973, 2109946, 4219892, 5274865, 10549730, 21099460]

約数ペア:

[(1, 21099460), (2, 10549730), (4, 5274865), (5, 4219892), (10, 2109946), (20, 1054973), (613, 34420), (1226, 17210), (1721, 12260), (2452, 8605), (3065, 6884), (3442, 6130)]