21309165

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{24923}}^1$

素因数の和:24953

約数の個数: 24

約数和(自身を含む): 38881440

約数和(自身を除く): 17572275

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 24923, 74769, 124615, 224307, 373845, 473537, 1121535, 1420611, 2367685, 4261833, 7103055, 21309165]

約数ペア:

[(1, 21309165), (3, 7103055), (5, 4261833), (9, 2367685), (15, 1420611), (19, 1121535), (45, 473537), (57, 373845), (95, 224307), (171, 124615), (285, 74769), (855, 24923)]