257772340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{7109}}^1$

素因数の和:7169

約数の個数: 72

約数和(自身を含む): 646810920

約数和(自身を除く): 389038580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 74, 98, 140, 148, 185, 196, 245, 259, 370, 490, 518, 740, 980, 1036, 1295, 1813, 2590, 3626, 5180, 7109, 7252, 9065, 14218, 18130, 28436, 35545, 36260, 49763, 71090, 99526, 142180, 199052, 248815, 263033, 348341, 497630, 526066, 696682, 995260, 1052132, 1315165, 1393364, 1741705, 1841231, 2630330, 3483410, 3682462, 5260660, 6966820, 7364924, 9206155, 12888617, 18412310, 25777234, 36824620, 51554468, 64443085, 128886170, 257772340]

約数ペア:

[(1, 257772340), (2, 128886170), (4, 64443085), (5, 51554468), (7, 36824620), (10, 25777234), (14, 18412310), (20, 12888617), (28, 9206155), (35, 7364924), (37, 6966820), (49, 5260660), (70, 3682462), (74, 3483410), (98, 2630330), (140, 1841231), (148, 1741705), (185, 1393364), (196, 1315165), (245, 1052132), (259, 995260), (370, 696682), (490, 526066), (518, 497630), (740, 348341), (980, 263033), (1036, 248815), (1295, 199052), (1813, 142180), (2590, 99526), (3626, 71090), (5180, 49763), (7109, 36260), (7252, 35545), (9065, 28436), (14218, 18130)]