21806890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5107}}^1$

素因数の和:5182

約数の個数: 32

約数和(自身を含む): 45604224

約数和(自身を除く): 23797334

約数列:

[1, 2, 5, 7, 10, 14, 35, 61, 70, 122, 305, 427, 610, 854, 2135, 4270, 5107, 10214, 25535, 35749, 51070, 71498, 178745, 311527, 357490, 623054, 1557635, 2180689, 3115270, 4361378, 10903445, 21806890]

約数ペア:

[(1, 21806890), (2, 10903445), (5, 4361378), (7, 3115270), (10, 2180689), (14, 1557635), (35, 623054), (61, 357490), (70, 311527), (122, 178745), (305, 71498), (427, 51070), (610, 35749), (854, 25535), (2135, 10214), (4270, 5107)]