123238420

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{77999}}^1$

素因数の和:78087

約数の個数: 24

約数和(自身を含む): 262080000

約数和(自身を除く): 138841580

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 77999, 155998, 311996, 389995, 779990, 1559980, 6161921, 12323842, 24647684, 30809605, 61619210, 123238420]

約数ペア:

[(1, 123238420), (2, 61619210), (4, 30809605), (5, 24647684), (10, 12323842), (20, 6161921), (79, 1559980), (158, 779990), (316, 389995), (395, 311996), (790, 155998), (1580, 77999)]