21650440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77323}}^1$

素因数の和:77341

約数の個数: 32

約数和(自身を含む): 55673280

約数和(自身を除く): 34022840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77323, 154646, 309292, 386615, 541261, 618584, 773230, 1082522, 1546460, 2165044, 2706305, 3092920, 4330088, 5412610, 10825220, 21650440]

約数ペア:

[(1, 21650440), (2, 10825220), (4, 5412610), (5, 4330088), (7, 3092920), (8, 2706305), (10, 2165044), (14, 1546460), (20, 1082522), (28, 773230), (35, 618584), (40, 541261), (56, 386615), (70, 309292), (140, 154646), (280, 77323)]