20470401

素因数分解:

$3^4\times 7^1\times {\mathrm{79}}^1\times {\mathrm{457}}^1$

素因数の和:555

約数の個数: 40

約数和(自身を含む): 35467520

約数和(自身を除く): 14997119

約数列:

[1, 3, 7, 9, 21, 27, 63, 79, 81, 189, 237, 457, 553, 567, 711, 1371, 1659, 2133, 3199, 4113, 4977, 6399, 9597, 12339, 14931, 28791, 36103, 37017, 44793, 86373, 108309, 252721, 259119, 324927, 758163, 974781, 2274489, 2924343, 6823467, 20470401]

約数ペア:

[(1, 20470401), (3, 6823467), (7, 2924343), (9, 2274489), (21, 974781), (27, 758163), (63, 324927), (79, 259119), (81, 252721), (189, 108309), (237, 86373), (457, 44793), (553, 37017), (567, 36103), (711, 28791), (1371, 14931), (1659, 12339), (2133, 9597), (3199, 6399), (4113, 4977)]