19973825

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:337

約数の個数: 24

約数和(自身を含む): 25712640

約数和(自身を除く): 5738815

約数列:

[1, 5, 25, 47, 89, 191, 235, 445, 955, 1175, 2225, 4183, 4775, 8977, 16999, 20915, 44885, 84995, 104575, 224425, 424975, 798953, 3994765, 19973825]

約数ペア:

[(1, 19973825), (5, 3994765), (25, 798953), (47, 424975), (89, 224425), (191, 104575), (235, 84995), (445, 44885), (955, 20915), (1175, 16999), (2225, 8977), (4183, 4775)]