21663496

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{359}}^1\times {\mathrm{397}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 42984000

約数和(自身を除く): 21320504

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 359, 397, 718, 794, 1436, 1588, 2872, 3176, 6821, 7543, 13642, 15086, 27284, 30172, 54568, 60344, 142523, 285046, 570092, 1140184, 2707937, 5415874, 10831748, 21663496]

約数ペア:

[(1, 21663496), (2, 10831748), (4, 5415874), (8, 2707937), (19, 1140184), (38, 570092), (76, 285046), (152, 142523), (359, 60344), (397, 54568), (718, 30172), (794, 27284), (1436, 15086), (1588, 13642), (2872, 7543), (3176, 6821)]