21815577

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{8053}}^1$

素因数の和:8109

約数の個数: 24

約数和(自身を含む): 36855104

約数和(自身を除く): 15039527

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 8053, 24159, 56371, 72477, 169113, 346279, 507339, 1038837, 2423953, 3116511, 7271859, 21815577]

約数ペア:

[(1, 21815577), (3, 7271859), (7, 3116511), (9, 2423953), (21, 1038837), (43, 507339), (63, 346279), (129, 169113), (301, 72477), (387, 56371), (903, 24159), (2709, 8053)]