21811030

素因数分解:

$2^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{13381}}^1$

素因数の和:13551

約数の個数: 16

約数和(自身を含む): 39503664

約数和(自身を除く): 17692634

約数列:

[1, 2, 5, 10, 163, 326, 815, 1630, 13381, 26762, 66905, 133810, 2181103, 4362206, 10905515, 21811030]

約数ペア:

[(1, 21811030), (2, 10905515), (5, 4362206), (10, 2181103), (163, 133810), (326, 66905), (815, 26762), (1630, 13381)]