20197060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77681}}^1$

素因数の和:77703

約数の個数: 24

約数和(自身を含む): 45677016

約数和(自身を除く): 25479956

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77681, 155362, 310724, 388405, 776810, 1009853, 1553620, 2019706, 4039412, 5049265, 10098530, 20197060]

約数ペア:

[(1, 20197060), (2, 10098530), (4, 5049265), (5, 4039412), (10, 2019706), (13, 1553620), (20, 1009853), (26, 776810), (52, 388405), (65, 310724), (130, 155362), (260, 77681)]