51484760

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:900

約数の個数: 64

約数和(自身を含む): 121888800

約数和(自身を除く): 70404040

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 43, 74, 86, 148, 172, 185, 215, 296, 344, 370, 430, 740, 809, 860, 1480, 1591, 1618, 1720, 3182, 3236, 4045, 6364, 6472, 7955, 8090, 12728, 15910, 16180, 29933, 31820, 32360, 34787, 59866, 63640, 69574, 119732, 139148, 149665, 173935, 239464, 278296, 299330, 347870, 598660, 695740, 1197320, 1287119, 1391480, 2574238, 5148476, 6435595, 10296952, 12871190, 25742380, 51484760]

約数ペア:

[(1, 51484760), (2, 25742380), (4, 12871190), (5, 10296952), (8, 6435595), (10, 5148476), (20, 2574238), (37, 1391480), (40, 1287119), (43, 1197320), (74, 695740), (86, 598660), (148, 347870), (172, 299330), (185, 278296), (215, 239464), (296, 173935), (344, 149665), (370, 139148), (430, 119732), (740, 69574), (809, 63640), (860, 59866), (1480, 34787), (1591, 32360), (1618, 31820), (1720, 29933), (3182, 16180), (3236, 15910), (4045, 12728), (6364, 8090), (6472, 7955)]