21025090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{123677}}^1$

素因数の和:123701

約数の個数: 16

約数和(自身を含む): 40071672

約数和(自身を除く): 19046582

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 123677, 247354, 618385, 1236770, 2102509, 4205018, 10512545, 21025090]

約数ペア:

[(1, 21025090), (2, 10512545), (5, 4205018), (10, 2102509), (17, 1236770), (34, 618385), (85, 247354), (170, 123677)]