20408770

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{33457}}^1$

素因数の和:33525

約数の個数: 16

約数和(自身を含む): 37339128

約数和(自身を除く): 16930358

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 33457, 66914, 167285, 334570, 2040877, 4081754, 10204385, 20408770]

約数ペア:

[(1, 20408770), (2, 10204385), (5, 4081754), (10, 2040877), (61, 334570), (122, 167285), (305, 66914), (610, 33457)]