20747420

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{10271}}^1$

素因数の和:10381

約数の個数: 24

約数和(自身を含む): 44005248

約数和(自身を除く): 23257828

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 10271, 20542, 41084, 51355, 102710, 205420, 1037371, 2074742, 4149484, 5186855, 10373710, 20747420]

約数ペア:

[(1, 20747420), (2, 10373710), (4, 5186855), (5, 4149484), (10, 2074742), (20, 1037371), (101, 205420), (202, 102710), (404, 51355), (505, 41084), (1010, 20542), (2020, 10271)]