21401224

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{389}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 45290700

約数和(自身を除く): 23889476

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 92, 104, 184, 299, 389, 529, 598, 778, 1058, 1196, 1556, 2116, 2392, 3112, 4232, 5057, 6877, 8947, 10114, 13754, 17894, 20228, 27508, 35788, 40456, 55016, 71576, 116311, 205781, 232622, 411562, 465244, 823124, 930488, 1646248, 2675153, 5350306, 10700612, 21401224]

約数ペア:

[(1, 21401224), (2, 10700612), (4, 5350306), (8, 2675153), (13, 1646248), (23, 930488), (26, 823124), (46, 465244), (52, 411562), (92, 232622), (104, 205781), (184, 116311), (299, 71576), (389, 55016), (529, 40456), (598, 35788), (778, 27508), (1058, 20228), (1196, 17894), (1556, 13754), (2116, 10114), (2392, 8947), (3112, 6877), (4232, 5057)]