21302955

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27847}}^1$

素因数の和:27875

約数の個数: 24

約数和(自身を含む): 39098592

約数和(自身を除く): 17795637

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27847, 83541, 139235, 250623, 417705, 473399, 1253115, 1420197, 2366995, 4260591, 7100985, 21302955]

約数ペア:

[(1, 21302955), (3, 7100985), (5, 4260591), (9, 2366995), (15, 1420197), (17, 1253115), (45, 473399), (51, 417705), (85, 250623), (153, 139235), (255, 83541), (765, 27847)]