20001850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{887}}^1$

素因数の和:951

約数の個数: 48

約数和(自身を含む): 41622336

約数和(自身を除く): 21620486

約数列:

[1, 2, 5, 10, 11, 22, 25, 41, 50, 55, 82, 110, 205, 275, 410, 451, 550, 887, 902, 1025, 1774, 2050, 2255, 4435, 4510, 8870, 9757, 11275, 19514, 22175, 22550, 36367, 44350, 48785, 72734, 97570, 181835, 243925, 363670, 400037, 487850, 800074, 909175, 1818350, 2000185, 4000370, 10000925, 20001850]

約数ペア:

[(1, 20001850), (2, 10000925), (5, 4000370), (10, 2000185), (11, 1818350), (22, 909175), (25, 800074), (41, 487850), (50, 400037), (55, 363670), (82, 243925), (110, 181835), (205, 97570), (275, 72734), (410, 48785), (451, 44350), (550, 36367), (887, 22550), (902, 22175), (1025, 19514), (1774, 11275), (2050, 9757), (2255, 8870), (4435, 4510)]