20800

素因数分解:

$2^6\times 5^2\times {\mathrm{13}}^1$

素因数の和:35

約数の個数: 42

約数和(自身を含む): 55118

約数和(自身を除く): 34318

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 130, 160, 200, 208, 260, 320, 325, 400, 416, 520, 650, 800, 832, 1040, 1300, 1600, 2080, 2600, 4160, 5200, 10400, 20800]

約数ペア:

[(1, 20800), (2, 10400), (4, 5200), (5, 4160), (8, 2600), (10, 2080), (13, 1600), (16, 1300), (20, 1040), (25, 832), (26, 800), (32, 650), (40, 520), (50, 416), (52, 400), (64, 325), (65, 320), (80, 260), (100, 208), (104, 200), (130, 160)]