64687840

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:289

約数の個数: 144

約数和(自身を含む): 183399552

約数和(自身を除く): 118711712

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 49, 56, 70, 74, 80, 98, 112, 140, 148, 160, 185, 196, 223, 224, 245, 259, 280, 296, 370, 392, 446, 490, 518, 560, 592, 740, 784, 892, 980, 1036, 1115, 1120, 1184, 1295, 1480, 1561, 1568, 1784, 1813, 1960, 2072, 2230, 2590, 2960, 3122, 3568, 3626, 3920, 4144, 4460, 5180, 5920, 6244, 7136, 7252, 7805, 7840, 8251, 8288, 8920, 9065, 10360, 10927, 12488, 14504, 15610, 16502, 17840, 18130, 20720, 21854, 24976, 29008, 31220, 33004, 35680, 36260, 41255, 41440, 43708, 49952, 54635, 57757, 58016, 62440, 66008, 72520, 82510, 87416, 109270, 115514, 124880, 132016, 145040, 165020, 174832, 218540, 231028, 249760, 264032, 288785, 290080, 330040, 349664, 404299, 437080, 462056, 577570, 660080, 808598, 874160, 924112, 1155140, 1320160, 1617196, 1748320, 1848224, 2021495, 2310280, 3234392, 4042990, 4620560, 6468784, 8085980, 9241120, 12937568, 16171960, 32343920, 64687840]

約数ペア:

[(1, 64687840), (2, 32343920), (4, 16171960), (5, 12937568), (7, 9241120), (8, 8085980), (10, 6468784), (14, 4620560), (16, 4042990), (20, 3234392), (28, 2310280), (32, 2021495), (35, 1848224), (37, 1748320), (40, 1617196), (49, 1320160), (56, 1155140), (70, 924112), (74, 874160), (80, 808598), (98, 660080), (112, 577570), (140, 462056), (148, 437080), (160, 404299), (185, 349664), (196, 330040), (223, 290080), (224, 288785), (245, 264032), (259, 249760), (280, 231028), (296, 218540), (370, 174832), (392, 165020), (446, 145040), (490, 132016), (518, 124880), (560, 115514), (592, 109270), (740, 87416), (784, 82510), (892, 72520), (980, 66008), (1036, 62440), (1115, 58016), (1120, 57757), (1184, 54635), (1295, 49952), (1480, 43708), (1561, 41440), (1568, 41255), (1784, 36260), (1813, 35680), (1960, 33004), (2072, 31220), (2230, 29008), (2590, 24976), (2960, 21854), (3122, 20720), (3568, 18130), (3626, 17840), (3920, 16502), (4144, 15610), (4460, 14504), (5180, 12488), (5920, 10927), (6244, 10360), (7136, 9065), (7252, 8920), (7805, 8288), (7840, 8251)]