21606669

素因数分解:

$3^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{719}}^1$

素因数の和:791

約数の個数: 40

約数和(自身を含む): 37635840

約数和(自身を除く): 16029171

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 81, 159, 189, 371, 477, 567, 719, 1113, 1431, 2157, 3339, 4293, 5033, 6471, 10017, 15099, 19413, 30051, 38107, 45297, 58239, 114321, 135891, 266749, 342963, 407673, 800247, 1028889, 2400741, 3086667, 7202223, 21606669]

約数ペア:

[(1, 21606669), (3, 7202223), (7, 3086667), (9, 2400741), (21, 1028889), (27, 800247), (53, 407673), (63, 342963), (81, 266749), (159, 135891), (189, 114321), (371, 58239), (477, 45297), (567, 38107), (719, 30051), (1113, 19413), (1431, 15099), (2157, 10017), (3339, 6471), (4293, 5033)]