72864440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{165601}}^1$

素因数の和:165623

約数の個数: 32

約数和(自身を含む): 178850160

約数和(自身を除く): 105985720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 165601, 331202, 662404, 828005, 1324808, 1656010, 1821611, 3312020, 3643222, 6624040, 7286444, 9108055, 14572888, 18216110, 36432220, 72864440]

約数ペア:

[(1, 72864440), (2, 36432220), (4, 18216110), (5, 14572888), (8, 9108055), (10, 7286444), (11, 6624040), (20, 3643222), (22, 3312020), (40, 1821611), (44, 1656010), (55, 1324808), (88, 828005), (110, 662404), (220, 331202), (440, 165601)]