51289960

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{16231}}^1$

素因数の和:16321

約数の個数: 32

約数和(自身を含む): 116870400

約数和(自身を除く): 65580440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 16231, 32462, 64924, 81155, 129848, 162310, 324620, 649240, 1282249, 2564498, 5128996, 6411245, 10257992, 12822490, 25644980, 51289960]

約数ペア:

[(1, 51289960), (2, 25644980), (4, 12822490), (5, 10257992), (8, 6411245), (10, 5128996), (20, 2564498), (40, 1282249), (79, 649240), (158, 324620), (316, 162310), (395, 129848), (632, 81155), (790, 64924), (1580, 32462), (3160, 16231)]