20828480

素因数分解:

$2^6\times 5^1\times {\mathrm{65089}}^1$

素因数の和:65106

約数の個数: 28

約数和(自身を含む): 49598580

約数和(自身を除く): 28770100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65089, 130178, 260356, 325445, 520712, 650890, 1041424, 1301780, 2082848, 2603560, 4165696, 5207120, 10414240, 20828480]

約数ペア:

[(1, 20828480), (2, 10414240), (4, 5207120), (5, 4165696), (8, 2603560), (10, 2082848), (16, 1301780), (20, 1041424), (32, 650890), (40, 520712), (64, 325445), (80, 260356), (160, 130178), (320, 65089)]