21656388

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{4787}}^1$

素因数の和:4836

約数の個数: 48

約数和(自身を含む): 56306880

約数和(自身を除く): 34650492

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 29, 39, 52, 58, 78, 87, 116, 156, 174, 348, 377, 754, 1131, 1508, 2262, 4524, 4787, 9574, 14361, 19148, 28722, 57444, 62231, 124462, 138823, 186693, 248924, 277646, 373386, 416469, 555292, 746772, 832938, 1665876, 1804699, 3609398, 5414097, 7218796, 10828194, 21656388]

約数ペア:

[(1, 21656388), (2, 10828194), (3, 7218796), (4, 5414097), (6, 3609398), (12, 1804699), (13, 1665876), (26, 832938), (29, 746772), (39, 555292), (52, 416469), (58, 373386), (78, 277646), (87, 248924), (116, 186693), (156, 138823), (174, 124462), (348, 62231), (377, 57444), (754, 28722), (1131, 19148), (1508, 14361), (2262, 9574), (4524, 4787)]