21278576

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{379}}^1$

素因数の和:438

約数の個数: 60

約数和(自身を含む): 47002200

約数和(自身を除く): 25723624

約数列:

[1, 2, 4, 8, 11, 16, 22, 29, 44, 58, 88, 116, 121, 176, 232, 242, 319, 379, 464, 484, 638, 758, 968, 1276, 1516, 1936, 2552, 3032, 3509, 4169, 5104, 6064, 7018, 8338, 10991, 14036, 16676, 21982, 28072, 33352, 43964, 45859, 56144, 66704, 87928, 91718, 120901, 175856, 183436, 241802, 366872, 483604, 733744, 967208, 1329911, 1934416, 2659822, 5319644, 10639288, 21278576]

約数ペア:

[(1, 21278576), (2, 10639288), (4, 5319644), (8, 2659822), (11, 1934416), (16, 1329911), (22, 967208), (29, 733744), (44, 483604), (58, 366872), (88, 241802), (116, 183436), (121, 175856), (176, 120901), (232, 91718), (242, 87928), (319, 66704), (379, 56144), (464, 45859), (484, 43964), (638, 33352), (758, 28072), (968, 21982), (1276, 16676), (1516, 14036), (1936, 10991), (2552, 8338), (3032, 7018), (3509, 6064), (4169, 5104)]