68289280

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1721}}^1$

素因数の和:1773

約数の個数: 72

約数和(自身を含む): 168948864

約数和(自身を除く): 100659584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1721, 1984, 2480, 3442, 3968, 4960, 6884, 7936, 8605, 9920, 13768, 17210, 19840, 27536, 34420, 39680, 53351, 55072, 68840, 106702, 110144, 137680, 213404, 220288, 266755, 275360, 426808, 440576, 533510, 550720, 853616, 1067020, 1101440, 1707232, 2134040, 2202880, 3414464, 4268080, 6828928, 8536160, 13657856, 17072320, 34144640, 68289280]

約数ペア:

[(1, 68289280), (2, 34144640), (4, 17072320), (5, 13657856), (8, 8536160), (10, 6828928), (16, 4268080), (20, 3414464), (31, 2202880), (32, 2134040), (40, 1707232), (62, 1101440), (64, 1067020), (80, 853616), (124, 550720), (128, 533510), (155, 440576), (160, 426808), (248, 275360), (256, 266755), (310, 220288), (320, 213404), (496, 137680), (620, 110144), (640, 106702), (992, 68840), (1240, 55072), (1280, 53351), (1721, 39680), (1984, 34420), (2480, 27536), (3442, 19840), (3968, 17210), (4960, 13768), (6884, 9920), (7936, 8605)]