16780775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{439}}^1$

素因数の和:599

約数の個数: 24

約数和(自身を含む): 22915200

約数和(自身を除く): 6134425

約数列:

[1, 5, 11, 25, 55, 139, 275, 439, 695, 1529, 2195, 3475, 4829, 7645, 10975, 24145, 38225, 61021, 120725, 305105, 671231, 1525525, 3356155, 16780775]

約数ペア:

[(1, 16780775), (5, 3356155), (11, 1525525), (25, 671231), (55, 305105), (139, 120725), (275, 61021), (439, 38225), (695, 24145), (1529, 10975), (2195, 7645), (3475, 4829)]