66988280

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{7937}}^1$

素因数の和:8159

約数の個数: 32

約数和(自身を含む): 151457040

約数和(自身を除く): 84468760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 7937, 8440, 15874, 31748, 39685, 63496, 79370, 158740, 317480, 1674707, 3349414, 6698828, 8373535, 13397656, 16747070, 33494140, 66988280]

約数ペア:

[(1, 66988280), (2, 33494140), (4, 16747070), (5, 13397656), (8, 8373535), (10, 6698828), (20, 3349414), (40, 1674707), (211, 317480), (422, 158740), (844, 79370), (1055, 63496), (1688, 39685), (2110, 31748), (4220, 15874), (7937, 8440)]