19727216

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{709}}^1$

素因数の和:801

約数の個数: 40

約数和(自身を含む): 40146240

約数和(自身を除く): 20419024

約数列:

[1, 2, 4, 8, 16, 37, 47, 74, 94, 148, 188, 296, 376, 592, 709, 752, 1418, 1739, 2836, 3478, 5672, 6956, 11344, 13912, 26233, 27824, 33323, 52466, 66646, 104932, 133292, 209864, 266584, 419728, 533168, 1232951, 2465902, 4931804, 9863608, 19727216]

約数ペア:

[(1, 19727216), (2, 9863608), (4, 4931804), (8, 2465902), (16, 1232951), (37, 533168), (47, 419728), (74, 266584), (94, 209864), (148, 133292), (188, 104932), (296, 66646), (376, 52466), (592, 33323), (709, 27824), (752, 26233), (1418, 13912), (1739, 11344), (2836, 6956), (3478, 5672)]