218608420

素因数分解:

$2^2\times 5^1\times {\mathrm{1429}}^1\times {\mathrm{7649}}^1$

素因数の和:9087

約数の個数: 24

約数和(自身を含む): 459459000

約数和(自身を除く): 240850580

約数列:

[1, 2, 4, 5, 10, 20, 1429, 2858, 5716, 7145, 7649, 14290, 15298, 28580, 30596, 38245, 76490, 152980, 10930421, 21860842, 43721684, 54652105, 109304210, 218608420]

約数ペア:

[(1, 218608420), (2, 109304210), (4, 54652105), (5, 43721684), (10, 21860842), (20, 10930421), (1429, 152980), (2858, 76490), (5716, 38245), (7145, 30596), (7649, 28580), (14290, 15298)]