19873760

素因数分解:

$2^5\times 5^1\times {\mathrm{223}}^1\times {\mathrm{557}}^1$

素因数の和:795

約数の個数: 48

約数和(自身を含む): 47246976

約数和(自身を除く): 27373216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 223, 446, 557, 892, 1114, 1115, 1784, 2228, 2230, 2785, 3568, 4456, 4460, 5570, 7136, 8912, 8920, 11140, 17824, 17840, 22280, 35680, 44560, 89120, 124211, 248422, 496844, 621055, 993688, 1242110, 1987376, 2484220, 3974752, 4968440, 9936880, 19873760]

約数ペア:

[(1, 19873760), (2, 9936880), (4, 4968440), (5, 3974752), (8, 2484220), (10, 1987376), (16, 1242110), (20, 993688), (32, 621055), (40, 496844), (80, 248422), (160, 124211), (223, 89120), (446, 44560), (557, 35680), (892, 22280), (1114, 17840), (1115, 17824), (1784, 11140), (2228, 8920), (2230, 8912), (2785, 7136), (3568, 5570), (4456, 4460)]