81945760

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39397}}^1$

素因数の和:39425

約数の個数: 48

約数和(自身を含む): 208494216

約数和(自身を除く): 126548456

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 39397, 78794, 157588, 196985, 315176, 393970, 512161, 630352, 787940, 1024322, 1260704, 1575880, 2048644, 2560805, 3151760, 4097288, 5121610, 6303520, 8194576, 10243220, 16389152, 20486440, 40972880, 81945760]

約数ペア:

[(1, 81945760), (2, 40972880), (4, 20486440), (5, 16389152), (8, 10243220), (10, 8194576), (13, 6303520), (16, 5121610), (20, 4097288), (26, 3151760), (32, 2560805), (40, 2048644), (52, 1575880), (65, 1260704), (80, 1024322), (104, 787940), (130, 630352), (160, 512161), (208, 393970), (260, 315176), (416, 196985), (520, 157588), (1040, 78794), (2080, 39397)]