21280095

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{24889}}^1$

素因数の和:24919

約数の個数: 24

約数和(自身を含む): 38828400

約数和(自身を除く): 17548305

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 24889, 74667, 124445, 224001, 373335, 472891, 1120005, 1418673, 2364455, 4256019, 7093365, 21280095]

約数ペア:

[(1, 21280095), (3, 7093365), (5, 4256019), (9, 2364455), (15, 1418673), (19, 1120005), (45, 472891), (57, 373335), (95, 224001), (171, 124445), (285, 74667), (855, 24889)]