21004605

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27457}}^1$

素因数の和:27485

約数の個数: 24

約数和(自身を含む): 38551032

約数和(自身を除く): 17546427

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27457, 82371, 137285, 247113, 411855, 466769, 1235565, 1400307, 2333845, 4200921, 7001535, 21004605]

約数ペア:

[(1, 21004605), (3, 7001535), (5, 4200921), (9, 2333845), (15, 1400307), (17, 1235565), (45, 466769), (51, 411855), (85, 247113), (153, 137285), (255, 82371), (765, 27457)]