21178090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{124577}}^1$

素因数の和:124601

約数の個数: 16

約数和(自身を含む): 40363272

約数和(自身を除く): 19185182

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 124577, 249154, 622885, 1245770, 2117809, 4235618, 10589045, 21178090]

約数ペア:

[(1, 21178090), (2, 10589045), (5, 4235618), (10, 2117809), (17, 1245770), (34, 622885), (85, 249154), (170, 124577)]