71808020

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{22027}}^1$

素因数の和:22199

約数の個数: 24

約数和(自身を含む): 151728864

約数和(自身を除く): 79920844

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 22027, 44054, 88108, 110135, 220270, 440540, 3590401, 7180802, 14361604, 17952005, 35904010, 71808020]

約数ペア:

[(1, 71808020), (2, 35904010), (4, 17952005), (5, 14361604), (10, 7180802), (20, 3590401), (163, 440540), (326, 220270), (652, 110135), (815, 88108), (1630, 44054), (3260, 22027)]