1285280180

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{462331}}^1$

素因数の和:462479

約数の個数: 24

約数和(自身を含む): 2718512160

約数和(自身を除く): 1433231980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 462331, 924662, 1849324, 2311655, 4623310, 9246620, 64264009, 128528018, 257056036, 321320045, 642640090, 1285280180]

約数ペア:

[(1, 1285280180), (2, 642640090), (4, 321320045), (5, 257056036), (10, 128528018), (20, 64264009), (139, 9246620), (278, 4623310), (556, 2311655), (695, 1849324), (1390, 924662), (2780, 462331)]