18777213

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{227}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 33860736

約数和(自身を除く): 15083523

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 101, 117, 227, 273, 303, 681, 707, 819, 909, 1313, 1589, 2043, 2121, 2951, 3939, 4767, 6363, 8853, 9191, 11817, 14301, 20657, 22927, 26559, 27573, 61971, 68781, 82719, 160489, 185913, 206343, 298051, 481467, 894153, 1444401, 2086357, 2682459, 6259071, 18777213]

約数ペア:

[(1, 18777213), (3, 6259071), (7, 2682459), (9, 2086357), (13, 1444401), (21, 894153), (39, 481467), (63, 298051), (91, 206343), (101, 185913), (117, 160489), (227, 82719), (273, 68781), (303, 61971), (681, 27573), (707, 26559), (819, 22927), (909, 20657), (1313, 14301), (1589, 11817), (2043, 9191), (2121, 8853), (2951, 6363), (3939, 4767)]