20380690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{4519}}^1$

素因数の和:4578

約数の個数: 32

約数和(自身を含む): 41005440

約数和(自身を除く): 20624750

約数列:

[1, 2, 5, 10, 11, 22, 41, 55, 82, 110, 205, 410, 451, 902, 2255, 4510, 4519, 9038, 22595, 45190, 49709, 99418, 185279, 248545, 370558, 497090, 926395, 1852790, 2038069, 4076138, 10190345, 20380690]

約数ペア:

[(1, 20380690), (2, 10190345), (5, 4076138), (10, 2038069), (11, 1852790), (22, 926395), (41, 497090), (55, 370558), (82, 248545), (110, 185279), (205, 99418), (410, 49709), (451, 45190), (902, 22595), (2255, 9038), (4510, 4519)]