19979630

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{4909}}^1$

素因数の和:4964

約数の個数: 32

約数和(自身を含む): 40301280

約数和(自身を除く): 20321650

約数列:

[1, 2, 5, 10, 11, 22, 37, 55, 74, 110, 185, 370, 407, 814, 2035, 4070, 4909, 9818, 24545, 49090, 53999, 107998, 181633, 269995, 363266, 539990, 908165, 1816330, 1997963, 3995926, 9989815, 19979630]

約数ペア:

[(1, 19979630), (2, 9989815), (5, 3995926), (10, 1997963), (11, 1816330), (22, 908165), (37, 539990), (55, 363266), (74, 269995), (110, 181633), (185, 107998), (370, 53999), (407, 49090), (814, 24545), (2035, 9818), (4070, 4909)]