20460979

素因数分解:

$7^3\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1$

素因数の和:89

約数の個数: 48

約数和(自身を含む): 28728000

約数和(自身を除く): 8267021

約数列:

[1, 7, 11, 17, 29, 49, 77, 119, 121, 187, 203, 319, 343, 493, 539, 833, 847, 1309, 1421, 2057, 2233, 3451, 3509, 3773, 5423, 5831, 5929, 9163, 9947, 14399, 15631, 24157, 24563, 37961, 41503, 59653, 64141, 100793, 109417, 169099, 171941, 265727, 417571, 705551, 1203587, 1860089, 2922997, 20460979]

約数ペア:

[(1, 20460979), (7, 2922997), (11, 1860089), (17, 1203587), (29, 705551), (49, 417571), (77, 265727), (119, 171941), (121, 169099), (187, 109417), (203, 100793), (319, 64141), (343, 59653), (493, 41503), (539, 37961), (833, 24563), (847, 24157), (1309, 15631), (1421, 14399), (2057, 9947), (2233, 9163), (3451, 5929), (3509, 5831), (3773, 5423)]