12640725

素因数分解:

$3^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:387

約数の個数: 48

約数和(自身を含む): 23679040

約数和(自身を除く): 11038315

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 61, 75, 135, 183, 225, 305, 307, 549, 675, 915, 921, 1525, 1535, 1647, 2745, 2763, 4575, 4605, 7675, 8235, 8289, 13725, 13815, 18727, 23025, 41175, 41445, 56181, 69075, 93635, 168543, 207225, 280905, 468175, 505629, 842715, 1404525, 2528145, 4213575, 12640725]

約数ペア:

[(1, 12640725), (3, 4213575), (5, 2528145), (9, 1404525), (15, 842715), (25, 505629), (27, 468175), (45, 280905), (61, 207225), (75, 168543), (135, 93635), (183, 69075), (225, 56181), (305, 41445), (307, 41175), (549, 23025), (675, 18727), (915, 13815), (921, 13725), (1525, 8289), (1535, 8235), (1647, 7675), (2745, 4605), (2763, 4575)]