7225520

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{499}}^1$

素因数の和:693

約数の個数: 40

約数和(自身を含む): 16926000

約数和(自身を除く): 9700480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 499, 724, 905, 998, 1448, 1810, 1996, 2495, 2896, 3620, 3992, 4990, 7240, 7984, 9980, 14480, 19960, 39920, 90319, 180638, 361276, 451595, 722552, 903190, 1445104, 1806380, 3612760, 7225520]

約数ペア:

[(1, 7225520), (2, 3612760), (4, 1806380), (5, 1445104), (8, 903190), (10, 722552), (16, 451595), (20, 361276), (40, 180638), (80, 90319), (181, 39920), (362, 19960), (499, 14480), (724, 9980), (905, 7984), (998, 7240), (1448, 4990), (1810, 3992), (1996, 3620), (2495, 2896)]