55990420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{68281}}^1$

素因数の和:68331

約数の個数: 24

約数和(自身を含む): 120449448

約数和(自身を除く): 64459028

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 68281, 136562, 273124, 341405, 682810, 1365620, 2799521, 5599042, 11198084, 13997605, 27995210, 55990420]

約数ペア:

[(1, 55990420), (2, 27995210), (4, 13997605), (5, 11198084), (10, 5599042), (20, 2799521), (41, 1365620), (82, 682810), (164, 341405), (205, 273124), (410, 136562), (820, 68281)]