21155950

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{13649}}^1$

素因数の和:13692

約数の個数: 24

約数和(自身を含む): 40622400

約数和(自身を除く): 19466450

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 155, 310, 775, 1550, 13649, 27298, 68245, 136490, 341225, 423119, 682450, 846238, 2115595, 4231190, 10577975, 21155950]

約数ペア:

[(1, 21155950), (2, 10577975), (5, 4231190), (10, 2115595), (25, 846238), (31, 682450), (50, 423119), (62, 341225), (155, 136490), (310, 68245), (775, 27298), (1550, 13649)]