21343810

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{2221}}^1$

素因数の和:2290

約数の個数: 24

約数和(自身を含む): 39716028

約数和(自身を除く): 18372218

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 961, 1922, 2221, 4442, 4805, 9610, 11105, 22210, 68851, 137702, 344255, 688510, 2134381, 4268762, 10671905, 21343810]

約数ペア:

[(1, 21343810), (2, 10671905), (5, 4268762), (10, 2134381), (31, 688510), (62, 344255), (155, 137702), (310, 68851), (961, 22210), (1922, 11105), (2221, 9610), (4442, 4805)]