21545265

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{449}}^1\times {\mathrm{457}}^1$

素因数の和:921

約数の個数: 32

約数和(自身を含む): 39571200

約数和(自身を除く): 18025935

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 449, 457, 1347, 1371, 2245, 2285, 3143, 3199, 6735, 6855, 9429, 9597, 15715, 15995, 47145, 47985, 205193, 615579, 1025965, 1436351, 3077895, 4309053, 7181755, 21545265]

約数ペア:

[(1, 21545265), (3, 7181755), (5, 4309053), (7, 3077895), (15, 1436351), (21, 1025965), (35, 615579), (105, 205193), (449, 47985), (457, 47145), (1347, 15995), (1371, 15715), (2245, 9597), (2285, 9429), (3143, 6855), (3199, 6735)]