21245540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{34267}}^1$

素因数の和:34307

約数の個数: 24

約数和(自身を含む): 46056192

約数和(自身を除く): 24810652

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 34267, 68534, 137068, 171335, 342670, 685340, 1062277, 2124554, 4249108, 5311385, 10622770, 21245540]

約数ペア:

[(1, 21245540), (2, 10622770), (4, 5311385), (5, 4249108), (10, 2124554), (20, 1062277), (31, 685340), (62, 342670), (124, 171335), (155, 137068), (310, 68534), (620, 34267)]