1285687809

素因数分解:

$3^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{293}}^1$

素因数の和:492

約数の個数: 80

約数和(自身を含む): 2253968640

約数和(自身を除く): 968280831

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 81, 109, 189, 213, 293, 327, 497, 567, 639, 763, 879, 981, 1491, 1917, 2051, 2289, 2637, 2943, 4473, 5751, 6153, 6867, 7739, 7911, 8829, 13419, 18459, 20601, 20803, 23217, 23733, 31937, 40257, 54173, 55377, 61803, 62409, 69651, 95811, 145621, 162519, 166131, 187227, 208953, 223559, 287433, 436863, 487557, 561681, 626859, 670677, 862299, 1310589, 1462671, 1685043, 2012031, 2267527, 2586897, 3931767, 4388013, 6036093, 6802581, 11795301, 15872689, 18108279, 20407743, 47618067, 61223229, 142854201, 183669687, 428562603, 1285687809]

約数ペア:

[(1, 1285687809), (3, 428562603), (7, 183669687), (9, 142854201), (21, 61223229), (27, 47618067), (63, 20407743), (71, 18108279), (81, 15872689), (109, 11795301), (189, 6802581), (213, 6036093), (293, 4388013), (327, 3931767), (497, 2586897), (567, 2267527), (639, 2012031), (763, 1685043), (879, 1462671), (981, 1310589), (1491, 862299), (1917, 670677), (2051, 626859), (2289, 561681), (2637, 487557), (2943, 436863), (4473, 287433), (5751, 223559), (6153, 208953), (6867, 187227), (7739, 166131), (7911, 162519), (8829, 145621), (13419, 95811), (18459, 69651), (20601, 62409), (20803, 61803), (23217, 55377), (23733, 54173), (31937, 40257)]