19992196

素因数分解:

$2^2\times 7^2\times {\mathrm{102001}}^1$

素因数の和:102019

約数の個数: 18

約数和(自身を含む): 40698798

約数和(自身を除く): 20706602

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 102001, 204002, 408004, 714007, 1428014, 2856028, 4998049, 9996098, 19992196]

約数ペア:

[(1, 19992196), (2, 9996098), (4, 4998049), (7, 2856028), (14, 1428014), (28, 714007), (49, 408004), (98, 204002), (196, 102001)]