21188511

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1753}}^1$

素因数の和:1855

約数の個数: 24

約数和(自身を含む): 32834880

約数和(自身を除く): 11646369

約数列:

[1, 3, 9, 17, 51, 79, 153, 237, 711, 1343, 1753, 4029, 5259, 12087, 15777, 29801, 89403, 138487, 268209, 415461, 1246383, 2354279, 7062837, 21188511]

約数ペア:

[(1, 21188511), (3, 7062837), (9, 2354279), (17, 1246383), (51, 415461), (79, 268209), (153, 138487), (237, 89403), (711, 29801), (1343, 15777), (1753, 12087), (4029, 5259)]