208515680

素因数分解:

$2^5\times 5^1\times {\mathrm{1303223}}^1$

素因数の和:1303238

約数の個数: 24

約数和(自身を含む): 492618672

約数和(自身を除く): 284102992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 1303223, 2606446, 5212892, 6516115, 10425784, 13032230, 20851568, 26064460, 41703136, 52128920, 104257840, 208515680]

約数ペア:

[(1, 208515680), (2, 104257840), (4, 52128920), (5, 41703136), (8, 26064460), (10, 20851568), (16, 13032230), (20, 10425784), (32, 6516115), (40, 5212892), (80, 2606446), (160, 1303223)]