28041040

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{857}}^1$

素因数の和:1279

約数の個数: 40

約数和(自身を含む): 65431080

約数和(自身を除く): 37390040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 857, 1636, 1714, 2045, 3272, 3428, 4090, 4285, 6544, 6856, 8180, 8570, 13712, 16360, 17140, 32720, 34280, 68560, 350513, 701026, 1402052, 1752565, 2804104, 3505130, 5608208, 7010260, 14020520, 28041040]

約数ペア:

[(1, 28041040), (2, 14020520), (4, 7010260), (5, 5608208), (8, 3505130), (10, 2804104), (16, 1752565), (20, 1402052), (40, 701026), (80, 350513), (409, 68560), (818, 34280), (857, 32720), (1636, 17140), (1714, 16360), (2045, 13712), (3272, 8570), (3428, 8180), (4090, 6856), (4285, 6544)]