18991619

素因数分解:

${\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:314

約数の個数: 16

約数和(自身を含む): 20341248

約数和(自身を除く): 1349629

約数列:

[1, 37, 47, 67, 163, 1739, 2479, 3149, 6031, 7661, 10921, 116513, 283457, 404077, 513287, 18991619]

約数ペア:

[(1, 18991619), (37, 513287), (47, 404077), (67, 283457), (163, 116513), (1739, 10921), (2479, 7661), (3149, 6031)]