21312775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4079}}^1$

素因数の和:4119

約数の個数: 24

約数和(自身を含む): 30355200

約数和(自身を除く): 9042425

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 275, 475, 1045, 4079, 5225, 20395, 44869, 77501, 101975, 224345, 387505, 852511, 1121725, 1937525, 4262555, 21312775]

約数ペア:

[(1, 21312775), (5, 4262555), (11, 1937525), (19, 1121725), (25, 852511), (55, 387505), (95, 224345), (209, 101975), (275, 77501), (475, 44869), (1045, 20395), (4079, 5225)]