20481363

素因数分解:

$3^3\times 7^2\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:273

約数の個数: 48

約数和(自身を含む): 35868960

約数和(自身を除く): 15387597

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 113, 137, 147, 189, 339, 411, 441, 791, 959, 1017, 1233, 1323, 2373, 2877, 3051, 3699, 5537, 6713, 7119, 8631, 15481, 16611, 20139, 21357, 25893, 46443, 49833, 60417, 108367, 139329, 149499, 181251, 325101, 417987, 758569, 975303, 2275707, 2925909, 6827121, 20481363]

約数ペア:

[(1, 20481363), (3, 6827121), (7, 2925909), (9, 2275707), (21, 975303), (27, 758569), (49, 417987), (63, 325101), (113, 181251), (137, 149499), (147, 139329), (189, 108367), (339, 60417), (411, 49833), (441, 46443), (791, 25893), (959, 21357), (1017, 20139), (1233, 16611), (1323, 15481), (2373, 8631), (2877, 7119), (3051, 6713), (3699, 5537)]