221535

素因数分解:

$3^4\times 5^1\times {\mathrm{547}}^1$

素因数の和:564

約数の個数: 20

約数和(自身を含む): 397848

約数和(自身を除く): 176313

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 547, 1641, 2735, 4923, 8205, 14769, 24615, 44307, 73845, 221535]

約数ペア:

[(1, 221535), (3, 73845), (5, 44307), (9, 24615), (15, 14769), (27, 8205), (45, 4923), (81, 2735), (135, 1641), (405, 547)]