21282723

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{353}}^1$

素因数の和:409

約数の個数: 64

約数和(自身を含む): 40780800

約数和(自身を除く): 19498077

約数列:

[1, 3, 7, 9, 11, 21, 27, 29, 33, 63, 77, 87, 99, 189, 203, 231, 261, 297, 319, 353, 609, 693, 783, 957, 1059, 1827, 2079, 2233, 2471, 2871, 3177, 3883, 5481, 6699, 7413, 8613, 9531, 10237, 11649, 20097, 22239, 27181, 30711, 34947, 60291, 66717, 71659, 81543, 92133, 104841, 112607, 214977, 244629, 276399, 337821, 644931, 733887, 788249, 1013463, 1934793, 2364747, 3040389, 7094241, 21282723]

約数ペア:

[(1, 21282723), (3, 7094241), (7, 3040389), (9, 2364747), (11, 1934793), (21, 1013463), (27, 788249), (29, 733887), (33, 644931), (63, 337821), (77, 276399), (87, 244629), (99, 214977), (189, 112607), (203, 104841), (231, 92133), (261, 81543), (297, 71659), (319, 66717), (353, 60291), (609, 34947), (693, 30711), (783, 27181), (957, 22239), (1059, 20097), (1827, 11649), (2079, 10237), (2233, 9531), (2471, 8613), (2871, 7413), (3177, 6699), (3883, 5481)]