21947875

素因数分解:

$5^3\times {\mathrm{71}}^1\times {\mathrm{2473}}^1$

素因数の和:2559

約数の個数: 16

約数和(自身を含む): 27787968

約数和(自身を除く): 5840093

約数列:

[1, 5, 25, 71, 125, 355, 1775, 2473, 8875, 12365, 61825, 175583, 309125, 877915, 4389575, 21947875]

約数ペア:

[(1, 21947875), (5, 4389575), (25, 877915), (71, 309125), (125, 175583), (355, 61825), (1775, 12365), (2473, 8875)]