21394436

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{193}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 44585856

約数和(自身を除く): 23191420

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 107, 148, 193, 214, 259, 386, 428, 518, 749, 772, 1036, 1351, 1498, 2702, 2996, 3959, 5404, 7141, 7918, 14282, 15836, 20651, 27713, 28564, 41302, 49987, 55426, 82604, 99974, 110852, 144557, 199948, 289114, 578228, 764087, 1528174, 3056348, 5348609, 10697218, 21394436]

約数ペア:

[(1, 21394436), (2, 10697218), (4, 5348609), (7, 3056348), (14, 1528174), (28, 764087), (37, 578228), (74, 289114), (107, 199948), (148, 144557), (193, 110852), (214, 99974), (259, 82604), (386, 55426), (428, 49987), (518, 41302), (749, 28564), (772, 27713), (1036, 20651), (1351, 15836), (1498, 14282), (2702, 7918), (2996, 7141), (3959, 5404)]