20097995

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 26853120

約数和(自身を除く): 6755125

約数列:

[1, 5, 17, 41, 73, 79, 85, 205, 365, 395, 697, 1241, 1343, 2993, 3239, 3485, 5767, 6205, 6715, 14965, 16195, 28835, 50881, 55063, 98039, 236447, 254405, 275315, 490195, 1182235, 4019599, 20097995]

約数ペア:

[(1, 20097995), (5, 4019599), (17, 1182235), (41, 490195), (73, 275315), (79, 254405), (85, 236447), (205, 98039), (365, 55063), (395, 50881), (697, 28835), (1241, 16195), (1343, 14965), (2993, 6715), (3239, 6205), (3485, 5767)]