25808680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{15737}}^1$

素因数の和:15789

約数の個数: 32

約数和(自身を含む): 59489640

約数和(自身を除く): 33680960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 15737, 31474, 62948, 78685, 125896, 157370, 314740, 629480, 645217, 1290434, 2580868, 3226085, 5161736, 6452170, 12904340, 25808680]

約数ペア:

[(1, 25808680), (2, 12904340), (4, 6452170), (5, 5161736), (8, 3226085), (10, 2580868), (20, 1290434), (40, 645217), (41, 629480), (82, 314740), (164, 157370), (205, 125896), (328, 78685), (410, 62948), (820, 31474), (1640, 15737)]