20447209

素因数分解:

${\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{163}}^1$

素因数の和:384

約数の個数: 16

約数和(自身を含む): 22387968

約数和(自身を除く): 1940759

約数列:

[1, 17, 47, 157, 163, 799, 2669, 2771, 7379, 7661, 25591, 125443, 130237, 435047, 1202777, 20447209]

約数ペア:

[(1, 20447209), (17, 1202777), (47, 435047), (157, 130237), (163, 125443), (799, 25591), (2669, 7661), (2771, 7379)]