19808985

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{26951}}^1$

素因数の和:26973

約数の個数: 24

約数和(自身を含む): 36870336

約数和(自身を除く): 17061351

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 26951, 80853, 134755, 188657, 404265, 565971, 943285, 1320599, 2829855, 3961797, 6602995, 19808985]

約数ペア:

[(1, 19808985), (3, 6602995), (5, 3961797), (7, 2829855), (15, 1320599), (21, 943285), (35, 565971), (49, 404265), (105, 188657), (147, 134755), (245, 80853), (735, 26951)]