216855

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:151

約数の個数: 24

約数和(自身を含む): 386880

約数和(自身を除く): 170025

約数列:

[1, 3, 5, 9, 15, 45, 61, 79, 183, 237, 305, 395, 549, 711, 915, 1185, 2745, 3555, 4819, 14457, 24095, 43371, 72285, 216855]

約数ペア:

[(1, 216855), (3, 72285), (5, 43371), (9, 24095), (15, 14457), (45, 4819), (61, 3555), (79, 2745), (183, 1185), (237, 915), (305, 711), (395, 549)]