64173520

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:380

約数の個数: 80

約数和(自身を含む): 156240000

約数和(自身を除く): 92066480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 139, 145, 199, 232, 278, 290, 398, 464, 556, 580, 695, 796, 995, 1112, 1160, 1390, 1592, 1990, 2224, 2320, 2780, 3184, 3980, 4031, 5560, 5771, 7960, 8062, 11120, 11542, 15920, 16124, 20155, 23084, 27661, 28855, 32248, 40310, 46168, 55322, 57710, 64496, 80620, 92336, 110644, 115420, 138305, 161240, 221288, 230840, 276610, 322480, 442576, 461680, 553220, 802169, 1106440, 1604338, 2212880, 3208676, 4010845, 6417352, 8021690, 12834704, 16043380, 32086760, 64173520]

約数ペア:

[(1, 64173520), (2, 32086760), (4, 16043380), (5, 12834704), (8, 8021690), (10, 6417352), (16, 4010845), (20, 3208676), (29, 2212880), (40, 1604338), (58, 1106440), (80, 802169), (116, 553220), (139, 461680), (145, 442576), (199, 322480), (232, 276610), (278, 230840), (290, 221288), (398, 161240), (464, 138305), (556, 115420), (580, 110644), (695, 92336), (796, 80620), (995, 64496), (1112, 57710), (1160, 55322), (1390, 46168), (1592, 40310), (1990, 32248), (2224, 28855), (2320, 27661), (2780, 23084), (3184, 20155), (3980, 16124), (4031, 15920), (5560, 11542), (5771, 11120), (7960, 8062)]