20553775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2411}}^1$

素因数の和:2463

約数の個数: 24

約数和(自身を含む): 28712448

約数和(自身を除く): 8158673

約数列:

[1, 5, 11, 25, 31, 55, 155, 275, 341, 775, 1705, 2411, 8525, 12055, 26521, 60275, 74741, 132605, 373705, 663025, 822151, 1868525, 4110755, 20553775]

約数ペア:

[(1, 20553775), (5, 4110755), (11, 1868525), (25, 822151), (31, 663025), (55, 373705), (155, 132605), (275, 74741), (341, 60275), (775, 26521), (1705, 12055), (2411, 8525)]