20816800

素因数分解:

$2^5\times 5^2\times {\mathrm{26021}}^1$

素因数の和:26041

約数の個数: 36

約数和(自身を含む): 50820966

約数和(自身を除く): 30004166

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 26021, 52042, 104084, 130105, 208168, 260210, 416336, 520420, 650525, 832672, 1040840, 1301050, 2081680, 2602100, 4163360, 5204200, 10408400, 20816800]

約数ペア:

[(1, 20816800), (2, 10408400), (4, 5204200), (5, 4163360), (8, 2602100), (10, 2081680), (16, 1301050), (20, 1040840), (25, 832672), (32, 650525), (40, 520420), (50, 416336), (80, 260210), (100, 208168), (160, 130105), (200, 104084), (400, 52042), (800, 26021)]