21186228

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{263}}^1$

素因数の和:421

約数の個数: 72

約数和(自身を含む): 58145472

約数和(自身を除く): 36959244

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 137, 147, 196, 263, 274, 294, 411, 526, 548, 588, 789, 822, 959, 1052, 1578, 1644, 1841, 1918, 2877, 3156, 3682, 3836, 5523, 5754, 6713, 7364, 11046, 11508, 12887, 13426, 20139, 22092, 25774, 26852, 36031, 38661, 40278, 51548, 72062, 77322, 80556, 108093, 144124, 154644, 216186, 252217, 432372, 504434, 756651, 1008868, 1513302, 1765519, 3026604, 3531038, 5296557, 7062076, 10593114, 21186228]

約数ペア:

[(1, 21186228), (2, 10593114), (3, 7062076), (4, 5296557), (6, 3531038), (7, 3026604), (12, 1765519), (14, 1513302), (21, 1008868), (28, 756651), (42, 504434), (49, 432372), (84, 252217), (98, 216186), (137, 154644), (147, 144124), (196, 108093), (263, 80556), (274, 77322), (294, 72062), (411, 51548), (526, 40278), (548, 38661), (588, 36031), (789, 26852), (822, 25774), (959, 22092), (1052, 20139), (1578, 13426), (1644, 12887), (1841, 11508), (1918, 11046), (2877, 7364), (3156, 6713), (3682, 5754), (3836, 5523)]