81658864

素因数分解:

$2^4\times 7^1\times {\mathrm{197}}^1\times {\mathrm{3701}}^1$

素因数の和:3913

約数の個数: 40

約数和(自身を含む): 181783008

約数和(自身を除く): 100124144

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 197, 394, 788, 1379, 1576, 2758, 3152, 3701, 5516, 7402, 11032, 14804, 22064, 25907, 29608, 51814, 59216, 103628, 207256, 414512, 729097, 1458194, 2916388, 5103679, 5832776, 10207358, 11665552, 20414716, 40829432, 81658864]

約数ペア:

[(1, 81658864), (2, 40829432), (4, 20414716), (7, 11665552), (8, 10207358), (14, 5832776), (16, 5103679), (28, 2916388), (56, 1458194), (112, 729097), (197, 414512), (394, 207256), (788, 103628), (1379, 59216), (1576, 51814), (2758, 29608), (3152, 25907), (3701, 22064), (5516, 14804), (7402, 11032)]