21597895

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{1231}}^1$

素因数の和:1287

約数の個数: 24

約数和(自身を含む): 29494080

約数和(自身を除く): 7896185

約数列:

[1, 5, 11, 29, 55, 121, 145, 319, 605, 1231, 1595, 3509, 6155, 13541, 17545, 35699, 67705, 148951, 178495, 392689, 744755, 1963445, 4319579, 21597895]

約数ペア:

[(1, 21597895), (5, 4319579), (11, 1963445), (29, 744755), (55, 392689), (121, 178495), (145, 148951), (319, 67705), (605, 35699), (1231, 17545), (1595, 13541), (3509, 6155)]