8721680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:105

約数の個数: 120

約数和(自身を含む): 24045336

約数和(自身を除く): 15323656

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 53, 55, 68, 80, 85, 88, 106, 110, 121, 136, 170, 176, 187, 212, 220, 242, 265, 272, 340, 374, 424, 440, 484, 530, 583, 605, 680, 748, 848, 880, 901, 935, 968, 1060, 1166, 1210, 1360, 1496, 1802, 1870, 1936, 2057, 2120, 2332, 2420, 2915, 2992, 3604, 3740, 4114, 4240, 4505, 4664, 4840, 5830, 6413, 7208, 7480, 8228, 9010, 9328, 9680, 9911, 10285, 11660, 12826, 14416, 14960, 16456, 18020, 19822, 20570, 23320, 25652, 32065, 32912, 36040, 39644, 41140, 46640, 49555, 51304, 64130, 72080, 79288, 82280, 99110, 102608, 109021, 128260, 158576, 164560, 198220, 218042, 256520, 396440, 436084, 513040, 545105, 792880, 872168, 1090210, 1744336, 2180420, 4360840, 8721680]

約数ペア:

[(1, 8721680), (2, 4360840), (4, 2180420), (5, 1744336), (8, 1090210), (10, 872168), (11, 792880), (16, 545105), (17, 513040), (20, 436084), (22, 396440), (34, 256520), (40, 218042), (44, 198220), (53, 164560), (55, 158576), (68, 128260), (80, 109021), (85, 102608), (88, 99110), (106, 82280), (110, 79288), (121, 72080), (136, 64130), (170, 51304), (176, 49555), (187, 46640), (212, 41140), (220, 39644), (242, 36040), (265, 32912), (272, 32065), (340, 25652), (374, 23320), (424, 20570), (440, 19822), (484, 18020), (530, 16456), (583, 14960), (605, 14416), (680, 12826), (748, 11660), (848, 10285), (880, 9911), (901, 9680), (935, 9328), (968, 9010), (1060, 8228), (1166, 7480), (1210, 7208), (1360, 6413), (1496, 5830), (1802, 4840), (1870, 4664), (1936, 4505), (2057, 4240), (2120, 4114), (2332, 3740), (2420, 3604), (2915, 2992)]