20888413

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 26998272

約数和(自身を除く): 6109859

約数列:

[1, 7, 13, 53, 61, 71, 91, 371, 427, 497, 689, 793, 923, 3233, 3763, 4331, 4823, 5551, 6461, 22631, 26341, 30317, 42029, 48919, 56303, 229543, 294203, 342433, 394121, 1606801, 2984059, 20888413]

約数ペア:

[(1, 20888413), (7, 2984059), (13, 1606801), (53, 394121), (61, 342433), (71, 294203), (91, 229543), (371, 56303), (427, 48919), (497, 42029), (689, 30317), (793, 26341), (923, 22631), (3233, 6461), (3763, 5551), (4331, 4823)]