639343705

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{919}}^1$

素因数の和:1094

約数の個数: 64

約数和(自身を含む): 1038643200

約数和(自身を除く): 399299495

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 139, 143, 385, 455, 695, 715, 919, 973, 1001, 1529, 1807, 4595, 4865, 5005, 6433, 7645, 9035, 10109, 10703, 11947, 12649, 19877, 32165, 50545, 53515, 59735, 63245, 70763, 83629, 99385, 127741, 131417, 139139, 353815, 418145, 638705, 657085, 695695, 894187, 919919, 1405151, 1660633, 4470935, 4599595, 7025755, 8303165, 9836057, 11624431, 18266963, 49180285, 58122155, 91334815, 127868741, 639343705]

約数ペア:

[(1, 639343705), (5, 127868741), (7, 91334815), (11, 58122155), (13, 49180285), (35, 18266963), (55, 11624431), (65, 9836057), (77, 8303165), (91, 7025755), (139, 4599595), (143, 4470935), (385, 1660633), (455, 1405151), (695, 919919), (715, 894187), (919, 695695), (973, 657085), (1001, 638705), (1529, 418145), (1807, 353815), (4595, 139139), (4865, 131417), (5005, 127741), (6433, 99385), (7645, 83629), (9035, 70763), (10109, 63245), (10703, 59735), (11947, 53515), (12649, 50545), (19877, 32165)]