1649020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2011}}^1$

素因数の和:2061

約数の個数: 24

約数和(自身を含む): 3549168

約数和(自身を除く): 1900148

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 2011, 4022, 8044, 10055, 20110, 40220, 82451, 164902, 329804, 412255, 824510, 1649020]

約数ペア:

[(1, 1649020), (2, 824510), (4, 412255), (5, 329804), (10, 164902), (20, 82451), (41, 40220), (82, 20110), (164, 10055), (205, 8044), (410, 4022), (820, 2011)]