816922240

素因数分解:

$2^7\times 5^1\times {\mathrm{1276441}}^1$

素因数の和:1276460

約数の個数: 32

約数和(自身を含む): 1952956260

約数和(自身を除く): 1136034020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1276441, 2552882, 5105764, 6382205, 10211528, 12764410, 20423056, 25528820, 40846112, 51057640, 81692224, 102115280, 163384448, 204230560, 408461120, 816922240]

約数ペア:

[(1, 816922240), (2, 408461120), (4, 204230560), (5, 163384448), (8, 102115280), (10, 81692224), (16, 51057640), (20, 40846112), (32, 25528820), (40, 20423056), (64, 12764410), (80, 10211528), (128, 6382205), (160, 5105764), (320, 2552882), (640, 1276441)]