21821535

素因数分解:

$3^3\times 5^1\times {\mathrm{161641}}^1$

素因数の和:161655

約数の個数: 16

約数和(自身を含む): 38794080

約数和(自身を除く): 16972545

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 161641, 484923, 808205, 1454769, 2424615, 4364307, 7273845, 21821535]

約数ペア:

[(1, 21821535), (3, 7273845), (5, 4364307), (9, 2424615), (15, 1454769), (27, 808205), (45, 484923), (135, 161641)]