647865218

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:161

約数の個数: 144

約数和(自身を含む): 1383234048

約数和(自身を除く): 735368830

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 31, 62, 73, 77, 91, 121, 143, 146, 154, 169, 182, 217, 242, 286, 338, 341, 403, 434, 511, 682, 803, 806, 847, 949, 1001, 1022, 1183, 1573, 1606, 1694, 1859, 1898, 2002, 2263, 2366, 2387, 2821, 3146, 3718, 3751, 4433, 4526, 4774, 5239, 5621, 5642, 6643, 7502, 8833, 8866, 10439, 10478, 11011, 11242, 12337, 13013, 13286, 15841, 17666, 20449, 20878, 22022, 24674, 24893, 26026, 26257, 29419, 31031, 31682, 36673, 40898, 48763, 49786, 52514, 57629, 58838, 61831, 62062, 73073, 73346, 86359, 97526, 114829, 115258, 123662, 135707, 143143, 146146, 172718, 174251, 205933, 229658, 271414, 273823, 286286, 323609, 341341, 348502, 382447, 403403, 411866, 547646, 633919, 647218, 682682, 764894, 803803, 806806, 949949, 1267838, 1492777, 1607606, 1899898, 1916761, 2265263, 2677129, 2985554, 3559699, 3833522, 4206917, 4437433, 4530526, 5354258, 7119398, 8413834, 8874866, 10449439, 20898878, 24917893, 29448419, 46276087, 49835786, 58896838, 92552174, 323932609, 647865218]

約数ペア:

[(1, 647865218), (2, 323932609), (7, 92552174), (11, 58896838), (13, 49835786), (14, 46276087), (22, 29448419), (26, 24917893), (31, 20898878), (62, 10449439), (73, 8874866), (77, 8413834), (91, 7119398), (121, 5354258), (143, 4530526), (146, 4437433), (154, 4206917), (169, 3833522), (182, 3559699), (217, 2985554), (242, 2677129), (286, 2265263), (338, 1916761), (341, 1899898), (403, 1607606), (434, 1492777), (511, 1267838), (682, 949949), (803, 806806), (806, 803803), (847, 764894), (949, 682682), (1001, 647218), (1022, 633919), (1183, 547646), (1573, 411866), (1606, 403403), (1694, 382447), (1859, 348502), (1898, 341341), (2002, 323609), (2263, 286286), (2366, 273823), (2387, 271414), (2821, 229658), (3146, 205933), (3718, 174251), (3751, 172718), (4433, 146146), (4526, 143143), (4774, 135707), (5239, 123662), (5621, 115258), (5642, 114829), (6643, 97526), (7502, 86359), (8833, 73346), (8866, 73073), (10439, 62062), (10478, 61831), (11011, 58838), (11242, 57629), (12337, 52514), (13013, 49786), (13286, 48763), (15841, 40898), (17666, 36673), (20449, 31682), (20878, 31031), (22022, 29419), (24674, 26257), (24893, 26026)]