19915951

素因数分解:

${\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{443}}^1$

素因数の和:582

約数の個数: 16

約数和(自身を含む): 22462848

約数和(自身を除く): 2546897

約数列:

[1, 11, 61, 67, 443, 671, 737, 4087, 4873, 27023, 29681, 44957, 297253, 326491, 1810541, 19915951]

約数ペア:

[(1, 19915951), (11, 1810541), (61, 326491), (67, 297253), (443, 44957), (671, 29681), (737, 27023), (4087, 4873)]