71542280

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{4373}}^1$

素因数の和:4793

約数の個数: 32

約数和(自身を含む): 161400600

約数和(自身を除く): 89858320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 4373, 8180, 8746, 16360, 17492, 21865, 34984, 43730, 87460, 174920, 1788557, 3577114, 7154228, 8942785, 14308456, 17885570, 35771140, 71542280]

約数ペア:

[(1, 71542280), (2, 35771140), (4, 17885570), (5, 14308456), (8, 8942785), (10, 7154228), (20, 3577114), (40, 1788557), (409, 174920), (818, 87460), (1636, 43730), (2045, 34984), (3272, 21865), (4090, 17492), (4373, 16360), (8180, 8746)]