25684040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{15661}}^1$

素因数の和:15713

約数の個数: 32

約数和(自身を含む): 59202360

約数和(自身を除く): 33518320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 15661, 31322, 62644, 78305, 125288, 156610, 313220, 626440, 642101, 1284202, 2568404, 3210505, 5136808, 6421010, 12842020, 25684040]

約数ペア:

[(1, 25684040), (2, 12842020), (4, 6421010), (5, 5136808), (8, 3210505), (10, 2568404), (20, 1284202), (40, 642101), (41, 626440), (82, 313220), (164, 156610), (205, 125288), (328, 78305), (410, 62644), (820, 31322), (1640, 15661)]