20201740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77699}}^1$

素因数の和:77721

約数の個数: 24

約数和(自身を含む): 45687600

約数和(自身を除く): 25485860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77699, 155398, 310796, 388495, 776990, 1010087, 1553980, 2020174, 4040348, 5050435, 10100870, 20201740]

約数ペア:

[(1, 20201740), (2, 10100870), (4, 5050435), (5, 4040348), (10, 2020174), (13, 1553980), (20, 1010087), (26, 776990), (52, 388495), (65, 310796), (130, 155398), (260, 77699)]