20205185

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{367}}^1$

素因数の和:414

約数の個数: 48

約数和(自身を含む): 32890368

約数和(自身を除く): 12685183

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 121, 143, 367, 385, 455, 605, 715, 847, 1001, 1573, 1835, 2569, 4037, 4235, 4771, 5005, 7865, 11011, 12845, 20185, 23855, 28259, 33397, 44407, 52481, 55055, 141295, 166985, 222035, 262405, 310849, 367367, 577291, 1554245, 1836835, 2886455, 4041037, 20205185]

約数ペア:

[(1, 20205185), (5, 4041037), (7, 2886455), (11, 1836835), (13, 1554245), (35, 577291), (55, 367367), (65, 310849), (77, 262405), (91, 222035), (121, 166985), (143, 141295), (367, 55055), (385, 52481), (455, 44407), (605, 33397), (715, 28259), (847, 23855), (1001, 20185), (1573, 12845), (1835, 11011), (2569, 7865), (4037, 5005), (4235, 4771)]