21198775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3433}}^1$

素因数の和:3475

約数の個数: 24

約数和(自身を含む): 29807120

約数和(自身を除く): 8608345

約数列:

[1, 5, 13, 19, 25, 65, 95, 247, 325, 475, 1235, 3433, 6175, 17165, 44629, 65227, 85825, 223145, 326135, 847951, 1115725, 1630675, 4239755, 21198775]

約数ペア:

[(1, 21198775), (5, 4239755), (13, 1630675), (19, 1115725), (25, 847951), (65, 326135), (95, 223145), (247, 85825), (325, 65227), (475, 44629), (1235, 17165), (3433, 6175)]