19906481

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{509}}^1$

素因数の和:704

約数の個数: 16

約数和(自身を含む): 23566080

約数和(自身を除く): 3659599

約数列:

[1, 7, 37, 151, 259, 509, 1057, 3563, 5587, 18833, 39109, 76859, 131831, 538013, 2843783, 19906481]

約数ペア:

[(1, 19906481), (7, 2843783), (37, 538013), (151, 131831), (259, 76859), (509, 39109), (1057, 18833), (3563, 5587)]