421796740

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{217421}}^1$

素因数の和:217527

約数の個数: 24

約数和(自身を含む): 894908952

約数和(自身を除く): 473112212

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 217421, 434842, 869684, 1087105, 2174210, 4348420, 21089837, 42179674, 84359348, 105449185, 210898370, 421796740]

約数ペア:

[(1, 421796740), (2, 210898370), (4, 105449185), (5, 84359348), (10, 42179674), (20, 21089837), (97, 4348420), (194, 2174210), (388, 1087105), (485, 869684), (970, 434842), (1940, 217421)]