20589807

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{907}}^1$

素因数の和:987

約数の個数: 32

約数和(自身を含む): 33472512

約数和(自身を除く): 12882705

約数列:

[1, 3, 7, 21, 23, 47, 69, 141, 161, 329, 483, 907, 987, 1081, 2721, 3243, 6349, 7567, 19047, 20861, 22701, 42629, 62583, 127887, 146027, 298403, 438081, 895209, 980467, 2941401, 6863269, 20589807]

約数ペア:

[(1, 20589807), (3, 6863269), (7, 2941401), (21, 980467), (23, 895209), (47, 438081), (69, 298403), (141, 146027), (161, 127887), (329, 62583), (483, 42629), (907, 22701), (987, 20861), (1081, 19047), (2721, 7567), (3243, 6349)]