20213853

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{313}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 31349760

約数和(自身を除く): 11135907

約数列:

[1, 3, 11, 19, 33, 57, 103, 209, 309, 313, 627, 939, 1133, 1957, 3399, 3443, 5871, 5947, 10329, 17841, 21527, 32239, 64581, 65417, 96717, 196251, 354629, 612541, 1063887, 1837623, 6737951, 20213853]

約数ペア:

[(1, 20213853), (3, 6737951), (11, 1837623), (19, 1063887), (33, 612541), (57, 354629), (103, 196251), (209, 96717), (309, 65417), (313, 64581), (627, 32239), (939, 21527), (1133, 17841), (1957, 10329), (3399, 5947), (3443, 5871)]