19648280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{251}}^1$

素因数の和:384

約数の個数: 64

約数和(自身を含む): 47174400

約数和(自身を除く): 27526120

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 103, 152, 190, 206, 251, 380, 412, 502, 515, 760, 824, 1004, 1030, 1255, 1957, 2008, 2060, 2510, 3914, 4120, 4769, 5020, 7828, 9538, 9785, 10040, 15656, 19076, 19570, 23845, 25853, 38152, 39140, 47690, 51706, 78280, 95380, 103412, 129265, 190760, 206824, 258530, 491207, 517060, 982414, 1034120, 1964828, 2456035, 3929656, 4912070, 9824140, 19648280]

約数ペア:

[(1, 19648280), (2, 9824140), (4, 4912070), (5, 3929656), (8, 2456035), (10, 1964828), (19, 1034120), (20, 982414), (38, 517060), (40, 491207), (76, 258530), (95, 206824), (103, 190760), (152, 129265), (190, 103412), (206, 95380), (251, 78280), (380, 51706), (412, 47690), (502, 39140), (515, 38152), (760, 25853), (824, 23845), (1004, 19570), (1030, 19076), (1255, 15656), (1957, 10040), (2008, 9785), (2060, 9538), (2510, 7828), (3914, 5020), (4120, 4769)]