81865760

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5749}}^1$

素因数の和:5853

約数の個数: 48

約数和(自身を含む): 195615000

約数和(自身を除く): 113749240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 890, 1424, 1780, 2848, 3560, 5749, 7120, 11498, 14240, 22996, 28745, 45992, 57490, 91984, 114980, 183968, 229960, 459920, 511661, 919840, 1023322, 2046644, 2558305, 4093288, 5116610, 8186576, 10233220, 16373152, 20466440, 40932880, 81865760]

約数ペア:

[(1, 81865760), (2, 40932880), (4, 20466440), (5, 16373152), (8, 10233220), (10, 8186576), (16, 5116610), (20, 4093288), (32, 2558305), (40, 2046644), (80, 1023322), (89, 919840), (160, 511661), (178, 459920), (356, 229960), (445, 183968), (712, 114980), (890, 91984), (1424, 57490), (1780, 45992), (2848, 28745), (3560, 22996), (5749, 14240), (7120, 11498)]