19812415

素因数分解:

$5^1\times 7^2\times {\mathrm{193}}^1\times {\mathrm{419}}^1$

素因数の和:631

約数の個数: 24

約数和(自身を含む): 27866160

約数和(自身を除く): 8053745

約数列:

[1, 5, 7, 35, 49, 193, 245, 419, 965, 1351, 2095, 2933, 6755, 9457, 14665, 20531, 47285, 80867, 102655, 404335, 566069, 2830345, 3962483, 19812415]

約数ペア:

[(1, 19812415), (5, 3962483), (7, 2830345), (35, 566069), (49, 404335), (193, 102655), (245, 80867), (419, 47285), (965, 20531), (1351, 14665), (2095, 9457), (2933, 6755)]