20619963

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1481}}^1$

素因数の和:1524

約数の個数: 48

約数和(自身を含む): 38840256

約数和(自身を除く): 18220293

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 63, 91, 117, 119, 153, 221, 273, 357, 663, 819, 1071, 1481, 1547, 1989, 4443, 4641, 10367, 13329, 13923, 19253, 25177, 31101, 57759, 75531, 93303, 134771, 173277, 176239, 226593, 327301, 404313, 528717, 981903, 1212939, 1586151, 2291107, 2945709, 6873321, 20619963]

約数ペア:

[(1, 20619963), (3, 6873321), (7, 2945709), (9, 2291107), (13, 1586151), (17, 1212939), (21, 981903), (39, 528717), (51, 404313), (63, 327301), (91, 226593), (117, 176239), (119, 173277), (153, 134771), (221, 93303), (273, 75531), (357, 57759), (663, 31101), (819, 25177), (1071, 19253), (1481, 13923), (1547, 13329), (1989, 10367), (4443, 4641)]