685968920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{947}}^1$

素因数の和:1177

約数の個数: 128

約数和(自身を含む): 1911168000

約数和(自身を除く): 1225199080

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 199, 260, 280, 364, 398, 455, 520, 728, 796, 910, 947, 995, 1393, 1592, 1820, 1894, 1990, 2587, 2786, 3640, 3788, 3980, 4735, 5174, 5572, 6629, 6965, 7576, 7960, 9470, 10348, 11144, 12311, 12935, 13258, 13930, 18109, 18940, 20696, 24622, 25870, 26516, 27860, 33145, 36218, 37880, 49244, 51740, 53032, 55720, 61555, 66290, 72436, 86177, 90545, 98488, 103480, 123110, 132580, 144872, 172354, 181090, 188453, 246220, 265160, 344708, 362180, 376906, 430885, 492440, 689416, 724360, 753812, 861770, 942265, 1319171, 1507624, 1723540, 1884530, 2449889, 2638342, 3447080, 3769060, 4899778, 5276684, 6595855, 7538120, 9799556, 10553368, 12249445, 13191710, 17149223, 19599112, 24498890, 26383420, 34298446, 48997780, 52766840, 68596892, 85746115, 97995560, 137193784, 171492230, 342984460, 685968920]

約数ペア:

[(1, 685968920), (2, 342984460), (4, 171492230), (5, 137193784), (7, 97995560), (8, 85746115), (10, 68596892), (13, 52766840), (14, 48997780), (20, 34298446), (26, 26383420), (28, 24498890), (35, 19599112), (40, 17149223), (52, 13191710), (56, 12249445), (65, 10553368), (70, 9799556), (91, 7538120), (104, 6595855), (130, 5276684), (140, 4899778), (182, 3769060), (199, 3447080), (260, 2638342), (280, 2449889), (364, 1884530), (398, 1723540), (455, 1507624), (520, 1319171), (728, 942265), (796, 861770), (910, 753812), (947, 724360), (995, 689416), (1393, 492440), (1592, 430885), (1820, 376906), (1894, 362180), (1990, 344708), (2587, 265160), (2786, 246220), (3640, 188453), (3788, 181090), (3980, 172354), (4735, 144872), (5174, 132580), (5572, 123110), (6629, 103480), (6965, 98488), (7576, 90545), (7960, 86177), (9470, 72436), (10348, 66290), (11144, 61555), (12311, 55720), (12935, 53032), (13258, 51740), (13930, 49244), (18109, 37880), (18940, 36218), (20696, 33145), (24622, 27860), (25870, 26516)]