18980392

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{647}}^1$

素因数の和:865

約数の個数: 32

約数和(自身を含む): 37713600

約数和(自身を除く): 18733208

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 193, 386, 647, 772, 1294, 1544, 2588, 3667, 5176, 7334, 12293, 14668, 24586, 29336, 49172, 98344, 124871, 249742, 499484, 998968, 2372549, 4745098, 9490196, 18980392]

約数ペア:

[(1, 18980392), (2, 9490196), (4, 4745098), (8, 2372549), (19, 998968), (38, 499484), (76, 249742), (152, 124871), (193, 98344), (386, 49172), (647, 29336), (772, 24586), (1294, 14668), (1544, 12293), (2588, 7334), (3667, 5176)]