81464880

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{48491}}^1$

素因数の和:48514

約数の個数: 80

約数和(自身を含む): 288624384

約数和(自身を除く): 207159504

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 48491, 96982, 145473, 193964, 242455, 290946, 339437, 387928, 484910, 581892, 678874, 727365, 775856, 969820, 1018311, 1163784, 1357748, 1454730, 1697185, 1939640, 2036622, 2327568, 2715496, 2909460, 3394370, 3879280, 4073244, 5091555, 5430992, 5818920, 6788740, 8146488, 10183110, 11637840, 13577480, 16292976, 20366220, 27154960, 40732440, 81464880]

約数ペア:

[(1, 81464880), (2, 40732440), (3, 27154960), (4, 20366220), (5, 16292976), (6, 13577480), (7, 11637840), (8, 10183110), (10, 8146488), (12, 6788740), (14, 5818920), (15, 5430992), (16, 5091555), (20, 4073244), (21, 3879280), (24, 3394370), (28, 2909460), (30, 2715496), (35, 2327568), (40, 2036622), (42, 1939640), (48, 1697185), (56, 1454730), (60, 1357748), (70, 1163784), (80, 1018311), (84, 969820), (105, 775856), (112, 727365), (120, 678874), (140, 581892), (168, 484910), (210, 387928), (240, 339437), (280, 290946), (336, 242455), (420, 193964), (560, 145473), (840, 96982), (1680, 48491)]