405173620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{2539}}^1$

素因数の和:2728

約数の個数: 48

約数和(自身を含む): 870508800

約数和(自身を除く): 465335180

約数列:

[1, 2, 4, 5, 10, 20, 79, 101, 158, 202, 316, 395, 404, 505, 790, 1010, 1580, 2020, 2539, 5078, 7979, 10156, 12695, 15958, 25390, 31916, 39895, 50780, 79790, 159580, 200581, 256439, 401162, 512878, 802324, 1002905, 1025756, 1282195, 2005810, 2564390, 4011620, 5128780, 20258681, 40517362, 81034724, 101293405, 202586810, 405173620]

約数ペア:

[(1, 405173620), (2, 202586810), (4, 101293405), (5, 81034724), (10, 40517362), (20, 20258681), (79, 5128780), (101, 4011620), (158, 2564390), (202, 2005810), (316, 1282195), (395, 1025756), (404, 1002905), (505, 802324), (790, 512878), (1010, 401162), (1580, 256439), (2020, 200581), (2539, 159580), (5078, 79790), (7979, 50780), (10156, 39895), (12695, 31916), (15958, 25390)]