21003399

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{907}}^1$

素因数の和:1027

約数の個数: 24

約数和(自身を含む): 31729152

約数和(自身を除く): 10725753

約数列:

[1, 3, 9, 31, 83, 93, 249, 279, 747, 907, 2573, 2721, 7719, 8163, 23157, 28117, 75281, 84351, 225843, 253053, 677529, 2333711, 7001133, 21003399]

約数ペア:

[(1, 21003399), (3, 7001133), (9, 2333711), (31, 677529), (83, 253053), (93, 225843), (249, 84351), (279, 75281), (747, 28117), (907, 23157), (2573, 8163), (2721, 7719)]