81493120

素因数分解:

$2^7\times 5^1\times {\mathrm{223}}^1\times {\mathrm{571}}^1$

素因数の和:813

約数の個数: 64

約数和(自身を含む): 196035840

約数和(自身を除く): 114542720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 223, 320, 446, 571, 640, 892, 1115, 1142, 1784, 2230, 2284, 2855, 3568, 4460, 4568, 5710, 7136, 8920, 9136, 11420, 14272, 17840, 18272, 22840, 28544, 35680, 36544, 45680, 71360, 73088, 91360, 127333, 142720, 182720, 254666, 365440, 509332, 636665, 1018664, 1273330, 2037328, 2546660, 4074656, 5093320, 8149312, 10186640, 16298624, 20373280, 40746560, 81493120]

約数ペア:

[(1, 81493120), (2, 40746560), (4, 20373280), (5, 16298624), (8, 10186640), (10, 8149312), (16, 5093320), (20, 4074656), (32, 2546660), (40, 2037328), (64, 1273330), (80, 1018664), (128, 636665), (160, 509332), (223, 365440), (320, 254666), (446, 182720), (571, 142720), (640, 127333), (892, 91360), (1115, 73088), (1142, 71360), (1784, 45680), (2230, 36544), (2284, 35680), (2855, 28544), (3568, 22840), (4460, 18272), (4568, 17840), (5710, 14272), (7136, 11420), (8920, 9136)]