21183778

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{457}}^1$

素因数の和:527

約数の個数: 48

約数和(自身を含む): 41351904

約数和(自身を除く): 20168126

約数列:

[1, 2, 7, 11, 14, 22, 43, 49, 77, 86, 98, 154, 301, 457, 473, 539, 602, 914, 946, 1078, 2107, 3199, 3311, 4214, 5027, 6398, 6622, 10054, 19651, 22393, 23177, 35189, 39302, 44786, 46354, 70378, 137557, 216161, 246323, 275114, 432322, 492646, 962899, 1513127, 1925798, 3026254, 10591889, 21183778]

約数ペア:

[(1, 21183778), (2, 10591889), (7, 3026254), (11, 1925798), (14, 1513127), (22, 962899), (43, 492646), (49, 432322), (77, 275114), (86, 246323), (98, 216161), (154, 137557), (301, 70378), (457, 46354), (473, 44786), (539, 39302), (602, 35189), (914, 23177), (946, 22393), (1078, 19651), (2107, 10054), (3199, 6622), (3311, 6398), (4214, 5027)]