21065920

素因数分解:

$2^6\times 5^1\times {\mathrm{65831}}^1$

素因数の和:65848

約数の個数: 28

約数和(自身を含む): 50163984

約数和(自身を除く): 29098064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65831, 131662, 263324, 329155, 526648, 658310, 1053296, 1316620, 2106592, 2633240, 4213184, 5266480, 10532960, 21065920]

約数ペア:

[(1, 21065920), (2, 10532960), (4, 5266480), (5, 4213184), (8, 2633240), (10, 2106592), (16, 1316620), (20, 1053296), (32, 658310), (40, 526648), (64, 329155), (80, 263324), (160, 131662), (320, 65831)]