21156495

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{139}}^2$

素因数の和:359

約数の個数: 24

約数和(自身を含む): 34562736

約数和(自身を除く): 13406241

約数列:

[1, 3, 5, 15, 73, 139, 219, 365, 417, 695, 1095, 2085, 10147, 19321, 30441, 50735, 57963, 96605, 152205, 289815, 1410433, 4231299, 7052165, 21156495]

約数ペア:

[(1, 21156495), (3, 7052165), (5, 4231299), (15, 1410433), (73, 289815), (139, 152205), (219, 96605), (365, 57963), (417, 50735), (695, 30441), (1095, 19321), (2085, 10147)]