20451040

素因数分解:

$2^5\times 5^1\times {\mathrm{127819}}^1$

素因数の和:127834

約数の個数: 24

約数和(自身を含む): 48315960

約数和(自身を除く): 27864920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 127819, 255638, 511276, 639095, 1022552, 1278190, 2045104, 2556380, 4090208, 5112760, 10225520, 20451040]

約数ペア:

[(1, 20451040), (2, 10225520), (4, 5112760), (5, 4090208), (8, 2556380), (10, 2045104), (16, 1278190), (20, 1022552), (32, 639095), (40, 511276), (80, 255638), (160, 127819)]