21908830

素因数分解:

$2^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{13441}}^1$

素因数の和:13611

約数の個数: 16

約数和(自身を含む): 39680784

約数和(自身を除く): 17771954

約数列:

[1, 2, 5, 10, 163, 326, 815, 1630, 13441, 26882, 67205, 134410, 2190883, 4381766, 10954415, 21908830]

約数ペア:

[(1, 21908830), (2, 10954415), (5, 4381766), (10, 2190883), (163, 134410), (326, 67205), (815, 26882), (1630, 13441)]