66822160

素因数分解:

$2^4\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1291}}^1$

素因数の和:1951

約数の個数: 40

約数和(自身を含む): 155722176

約数和(自身を除く): 88900016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 647, 1291, 1294, 2582, 2588, 3235, 5164, 5176, 6455, 6470, 10328, 10352, 12910, 12940, 20656, 25820, 25880, 51640, 51760, 103280, 835277, 1670554, 3341108, 4176385, 6682216, 8352770, 13364432, 16705540, 33411080, 66822160]

約数ペア:

[(1, 66822160), (2, 33411080), (4, 16705540), (5, 13364432), (8, 8352770), (10, 6682216), (16, 4176385), (20, 3341108), (40, 1670554), (80, 835277), (647, 103280), (1291, 51760), (1294, 51640), (2582, 25880), (2588, 25820), (3235, 20656), (5164, 12940), (5176, 12910), (6455, 10352), (6470, 10328)]