20875216

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:403

約数の個数: 40

約数和(自身を含む): 41783040

約数和(自身を除く): 20907824

約数列:

[1, 2, 4, 8, 16, 53, 103, 106, 206, 212, 239, 412, 424, 478, 824, 848, 956, 1648, 1912, 3824, 5459, 10918, 12667, 21836, 24617, 25334, 43672, 49234, 50668, 87344, 98468, 101336, 196936, 202672, 393872, 1304701, 2609402, 5218804, 10437608, 20875216]

約数ペア:

[(1, 20875216), (2, 10437608), (4, 5218804), (8, 2609402), (16, 1304701), (53, 393872), (103, 202672), (106, 196936), (206, 101336), (212, 98468), (239, 87344), (412, 50668), (424, 49234), (478, 43672), (824, 25334), (848, 24617), (956, 21836), (1648, 12667), (1912, 10918), (3824, 5459)]