21844520

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7481}}^1$

素因数の和:7565

約数の個数: 32

約数和(自身を含む): 49830120

約数和(自身を除く): 27985600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7481, 14962, 29924, 37405, 59848, 74810, 149620, 299240, 546113, 1092226, 2184452, 2730565, 4368904, 5461130, 10922260, 21844520]

約数ペア:

[(1, 21844520), (2, 10922260), (4, 5461130), (5, 4368904), (8, 2730565), (10, 2184452), (20, 1092226), (40, 546113), (73, 299240), (146, 149620), (292, 74810), (365, 59848), (584, 37405), (730, 29924), (1460, 14962), (2920, 7481)]