20518119

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{1237}}^1$

素因数の和:1359

約数の個数: 24

約数和(自身を含む): 31544240

約数和(自身を除く): 11026121

約数列:

[1, 3, 9, 19, 57, 97, 171, 291, 873, 1237, 1843, 3711, 5529, 11133, 16587, 23503, 70509, 119989, 211527, 359967, 1079901, 2279791, 6839373, 20518119]

約数ペア:

[(1, 20518119), (3, 6839373), (9, 2279791), (19, 1079901), (57, 359967), (97, 211527), (171, 119989), (291, 70509), (873, 23503), (1237, 16587), (1843, 11133), (3711, 5529)]