21788193

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{269}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 36936000

約数和(自身を除く): 15147807

約数列:

[1, 3, 7, 19, 21, 29, 49, 57, 87, 133, 147, 203, 269, 399, 551, 609, 807, 931, 1421, 1653, 1883, 2793, 3857, 4263, 5111, 5649, 7801, 11571, 13181, 15333, 23403, 26999, 35777, 39543, 54607, 80997, 107331, 148219, 163821, 250439, 382249, 444657, 751317, 1037533, 1146747, 3112599, 7262731, 21788193]

約数ペア:

[(1, 21788193), (3, 7262731), (7, 3112599), (19, 1146747), (21, 1037533), (29, 751317), (49, 444657), (57, 382249), (87, 250439), (133, 163821), (147, 148219), (203, 107331), (269, 80997), (399, 54607), (551, 39543), (609, 35777), (807, 26999), (931, 23403), (1421, 15333), (1653, 13181), (1883, 11571), (2793, 7801), (3857, 5649), (4263, 5111)]