202012420

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{61967}}^1$

素因数の和:62139

約数の個数: 24

約数和(自身を含む): 426835584

約数和(自身を除く): 224823164

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 61967, 123934, 247868, 309835, 619670, 1239340, 10100621, 20201242, 40402484, 50503105, 101006210, 202012420]

約数ペア:

[(1, 202012420), (2, 101006210), (4, 50503105), (5, 40402484), (10, 20201242), (20, 10100621), (163, 1239340), (326, 619670), (652, 309835), (815, 247868), (1630, 123934), (3260, 61967)]