90871780

素因数分解:

$2^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{19841}}^1$

素因数の和:20079

約数の個数: 24

約数和(自身を含む): 191673720

約数和(自身を除く): 100801940

約数列:

[1, 2, 4, 5, 10, 20, 229, 458, 916, 1145, 2290, 4580, 19841, 39682, 79364, 99205, 198410, 396820, 4543589, 9087178, 18174356, 22717945, 45435890, 90871780]

約数ペア:

[(1, 90871780), (2, 45435890), (4, 22717945), (5, 18174356), (10, 9087178), (20, 4543589), (229, 396820), (458, 198410), (916, 99205), (1145, 79364), (2290, 39682), (4580, 19841)]