520391805

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^2\times {\mathrm{647}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 883198080

約数和(自身を除く): 362806275

約数列:

[1, 3, 5, 15, 29, 43, 87, 129, 145, 215, 435, 645, 647, 1247, 1849, 1941, 3235, 3741, 5547, 6235, 9245, 9705, 18705, 18763, 27735, 27821, 53621, 56289, 83463, 93815, 139105, 160863, 268105, 281445, 417315, 804315, 806809, 1196303, 2420427, 3588909, 4034045, 5981515, 12102135, 17944545, 34692787, 104078361, 173463935, 520391805]

約数ペア:

[(1, 520391805), (3, 173463935), (5, 104078361), (15, 34692787), (29, 17944545), (43, 12102135), (87, 5981515), (129, 4034045), (145, 3588909), (215, 2420427), (435, 1196303), (645, 806809), (647, 804315), (1247, 417315), (1849, 281445), (1941, 268105), (3235, 160863), (3741, 139105), (5547, 93815), (6235, 83463), (9245, 56289), (9705, 53621), (18705, 27821), (18763, 27735)]