21340570

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{20719}}^1$

素因数の和:20829

約数の個数: 16

約数和(自身を含む): 38787840

約数和(自身を除く): 17447270

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 20719, 41438, 103595, 207190, 2134057, 4268114, 10670285, 21340570]

約数ペア:

[(1, 21340570), (2, 10670285), (5, 4268114), (10, 2134057), (103, 207190), (206, 103595), (515, 41438), (1030, 20719)]