21778510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{719}}^1$

素因数の和:972

約数の個数: 32

約数和(自身を含む): 42456960

約数和(自身を除く): 20678450

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 233, 466, 719, 1165, 1438, 2330, 3029, 3595, 6058, 7190, 9347, 15145, 18694, 30290, 46735, 93470, 167527, 335054, 837635, 1675270, 2177851, 4355702, 10889255, 21778510]

約数ペア:

[(1, 21778510), (2, 10889255), (5, 4355702), (10, 2177851), (13, 1675270), (26, 837635), (65, 335054), (130, 167527), (233, 93470), (466, 46735), (719, 30290), (1165, 18694), (1438, 15145), (2330, 9347), (3029, 7190), (3595, 6058)]