21221208

素因数分解:

$2^3\times 3^2\times {\mathrm{359}}^1\times {\mathrm{821}}^1$

素因数の和:1192

約数の個数: 48

約数和(自身を含む): 57704400

約数和(自身を除く): 36483192

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 359, 718, 821, 1077, 1436, 1642, 2154, 2463, 2872, 3231, 3284, 4308, 4926, 6462, 6568, 7389, 8616, 9852, 12924, 14778, 19704, 25848, 29556, 59112, 294739, 589478, 884217, 1178956, 1768434, 2357912, 2652651, 3536868, 5305302, 7073736, 10610604, 21221208]

約数ペア:

[(1, 21221208), (2, 10610604), (3, 7073736), (4, 5305302), (6, 3536868), (8, 2652651), (9, 2357912), (12, 1768434), (18, 1178956), (24, 884217), (36, 589478), (72, 294739), (359, 59112), (718, 29556), (821, 25848), (1077, 19704), (1436, 14778), (1642, 12924), (2154, 9852), (2463, 8616), (2872, 7389), (3231, 6568), (3284, 6462), (4308, 4926)]