25720120

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{15683}}^1$

素因数の和:15735

約数の個数: 32

約数和(自身を含む): 59285520

約数和(自身を除く): 33565400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 15683, 31366, 62732, 78415, 125464, 156830, 313660, 627320, 643003, 1286006, 2572012, 3215015, 5144024, 6430030, 12860060, 25720120]

約数ペア:

[(1, 25720120), (2, 12860060), (4, 6430030), (5, 5144024), (8, 3215015), (10, 2572012), (20, 1286006), (40, 643003), (41, 627320), (82, 313660), (164, 156830), (205, 125464), (328, 78415), (410, 62732), (820, 31366), (1640, 15683)]