21557178

素因数分解:

$2^1\times 3^4\times {\mathrm{133069}}^1$

素因数の和:133083

約数の個数: 20

約数和(自身を含む): 48304410

約数和(自身を除く): 26747232

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 133069, 266138, 399207, 798414, 1197621, 2395242, 3592863, 7185726, 10778589, 21557178]

約数ペア:

[(1, 21557178), (2, 10778589), (3, 7185726), (6, 3592863), (9, 2395242), (18, 1197621), (27, 798414), (54, 399207), (81, 266138), (162, 133069)]