19915895

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{7229}}^1$

素因数の和:7282

約数の個数: 16

約数和(自身を含む): 26028000

約数和(自身を除く): 6112105

約数列:

[1, 5, 19, 29, 95, 145, 551, 2755, 7229, 36145, 137351, 209641, 686755, 1048205, 3983179, 19915895]

約数ペア:

[(1, 19915895), (5, 3983179), (19, 1048205), (29, 686755), (95, 209641), (145, 137351), (551, 36145), (2755, 7229)]