19756640

素因数分解:

$2^5\times 5^1\times {\mathrm{123479}}^1$

素因数の和:123494

約数の個数: 24

約数和(自身を含む): 46675440

約数和(自身を除く): 26918800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 123479, 246958, 493916, 617395, 987832, 1234790, 1975664, 2469580, 3951328, 4939160, 9878320, 19756640]

約数ペア:

[(1, 19756640), (2, 9878320), (4, 4939160), (5, 3951328), (8, 2469580), (10, 1975664), (16, 1234790), (20, 987832), (32, 617395), (40, 493916), (80, 246958), (160, 123479)]