20081024

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{359}}^1$

素因数の和:415

約数の個数: 64

約数和(自身を含む): 44064000

約数和(自身を除く): 23982976

約数列:

[1, 2, 4, 8, 16, 19, 23, 32, 38, 46, 64, 76, 92, 128, 152, 184, 304, 359, 368, 437, 608, 718, 736, 874, 1216, 1436, 1472, 1748, 2432, 2872, 2944, 3496, 5744, 6821, 6992, 8257, 11488, 13642, 13984, 16514, 22976, 27284, 27968, 33028, 45952, 54568, 55936, 66056, 109136, 132112, 156883, 218272, 264224, 313766, 436544, 528448, 627532, 873088, 1056896, 1255064, 2510128, 5020256, 10040512, 20081024]

約数ペア:

[(1, 20081024), (2, 10040512), (4, 5020256), (8, 2510128), (16, 1255064), (19, 1056896), (23, 873088), (32, 627532), (38, 528448), (46, 436544), (64, 313766), (76, 264224), (92, 218272), (128, 156883), (152, 132112), (184, 109136), (304, 66056), (359, 55936), (368, 54568), (437, 45952), (608, 33028), (718, 27968), (736, 27284), (874, 22976), (1216, 16514), (1436, 13984), (1472, 13642), (1748, 11488), (2432, 8257), (2872, 6992), (2944, 6821), (3496, 5744)]