20512120705

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{4231}}^1\times {\mathrm{42157}}^1$

素因数の和:46416

約数の個数: 16

約数和(自身を含む): 25691422464

約数和(自身を除く): 5179301759

約数列:

[1, 5, 23, 115, 4231, 21155, 42157, 97313, 210785, 486565, 969611, 4848055, 178366267, 891831335, 4102424141, 20512120705]

約数ペア:

[(1, 20512120705), (5, 4102424141), (23, 891831335), (115, 178366267), (4231, 4848055), (21155, 969611), (42157, 486565), (97313, 210785)]