21075830

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{28871}}^1$

素因数の和:28951

約数の個数: 16

約数和(自身を含む): 38457504

約数和(自身を除く): 17381674

約数列:

[1, 2, 5, 10, 73, 146, 365, 730, 28871, 57742, 144355, 288710, 2107583, 4215166, 10537915, 21075830]

約数ペア:

[(1, 21075830), (2, 10537915), (5, 4215166), (10, 2107583), (73, 288710), (146, 144355), (365, 57742), (730, 28871)]