661545

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1$

素因数の和:313

約数の個数: 24

約数和(自身を含む): 1170312

約数和(自身を除く): 508767

約数列:

[1, 3, 5, 9, 15, 45, 61, 183, 241, 305, 549, 723, 915, 1205, 2169, 2745, 3615, 10845, 14701, 44103, 73505, 132309, 220515, 661545]

約数ペア:

[(1, 661545), (3, 220515), (5, 132309), (9, 73505), (15, 44103), (45, 14701), (61, 10845), (183, 3615), (241, 2745), (305, 2169), (549, 1205), (723, 915)]