345465

素因数分解:

$3^4\times 5^1\times {\mathrm{853}}^1$

素因数の和:870

約数の個数: 20

約数和(自身を含む): 620004

約数和(自身を除く): 274539

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 853, 2559, 4265, 7677, 12795, 23031, 38385, 69093, 115155, 345465]

約数ペア:

[(1, 345465), (3, 115155), (5, 69093), (9, 38385), (15, 23031), (27, 12795), (45, 7677), (81, 4265), (135, 2559), (405, 853)]