21145254

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{647}}^1$

素因数の和:1084

約数の個数: 32

約数和(自身を含む): 45722880

約数和(自身を除く): 24577626

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 419, 647, 838, 1257, 1294, 1941, 2514, 3882, 5447, 8411, 10894, 16341, 16822, 25233, 32682, 50466, 271093, 542186, 813279, 1626558, 3524209, 7048418, 10572627, 21145254]

約数ペア:

[(1, 21145254), (2, 10572627), (3, 7048418), (6, 3524209), (13, 1626558), (26, 813279), (39, 542186), (78, 271093), (419, 50466), (647, 32682), (838, 25233), (1257, 16822), (1294, 16341), (1941, 10894), (2514, 8411), (3882, 5447)]