279984920

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{1361}}^1$

素因数の和:1548

約数の個数: 64

約数和(自身を含む): 652125600

約数和(自身を除く): 372140680

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 139, 148, 185, 278, 296, 370, 556, 695, 740, 1112, 1361, 1390, 1480, 2722, 2780, 5143, 5444, 5560, 6805, 10286, 10888, 13610, 20572, 25715, 27220, 41144, 50357, 51430, 54440, 100714, 102860, 189179, 201428, 205720, 251785, 378358, 402856, 503570, 756716, 945895, 1007140, 1513432, 1891790, 2014280, 3783580, 6999623, 7567160, 13999246, 27998492, 34998115, 55996984, 69996230, 139992460, 279984920]

約数ペア:

[(1, 279984920), (2, 139992460), (4, 69996230), (5, 55996984), (8, 34998115), (10, 27998492), (20, 13999246), (37, 7567160), (40, 6999623), (74, 3783580), (139, 2014280), (148, 1891790), (185, 1513432), (278, 1007140), (296, 945895), (370, 756716), (556, 503570), (695, 402856), (740, 378358), (1112, 251785), (1361, 205720), (1390, 201428), (1480, 189179), (2722, 102860), (2780, 100714), (5143, 54440), (5444, 51430), (5560, 50357), (6805, 41144), (10286, 27220), (10888, 25715), (13610, 20572)]