19716155

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{971}}^1$

素因数の和:1138

約数の個数: 16

約数和(自身を含む): 24634368

約数和(自身を除く): 4918213

約数列:

[1, 5, 31, 131, 155, 655, 971, 4061, 4855, 20305, 30101, 127201, 150505, 636005, 3943231, 19716155]

約数ペア:

[(1, 19716155), (5, 3943231), (31, 636005), (131, 150505), (155, 127201), (655, 30101), (971, 20305), (4061, 4855)]