20843151

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 32997888

約数和(自身を除く): 12154737

約数列:

[1, 3, 7, 21, 53, 61, 159, 183, 307, 371, 427, 921, 1113, 1281, 2149, 3233, 6447, 9699, 16271, 18727, 22631, 48813, 56181, 67893, 113897, 131089, 341691, 393267, 992531, 2977593, 6947717, 20843151]

約数ペア:

[(1, 20843151), (3, 6947717), (7, 2977593), (21, 992531), (53, 393267), (61, 341691), (159, 131089), (183, 113897), (307, 67893), (371, 56181), (427, 48813), (921, 22631), (1113, 18727), (1281, 16271), (2149, 9699), (3233, 6447)]