20171319

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{191}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 31850496

約数和(自身を除く): 11679177

約数列:

[1, 3, 7, 21, 47, 107, 141, 191, 321, 329, 573, 749, 987, 1337, 2247, 4011, 5029, 8977, 15087, 20437, 26931, 35203, 61311, 62839, 105609, 143059, 188517, 429177, 960539, 2881617, 6723773, 20171319]

約数ペア:

[(1, 20171319), (3, 6723773), (7, 2881617), (21, 960539), (47, 429177), (107, 188517), (141, 143059), (191, 105609), (321, 62839), (329, 61311), (573, 35203), (749, 26931), (987, 20437), (1337, 15087), (2247, 8977), (4011, 5029)]