19969455

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{3271}}^1$

素因数の和:3327

約数の個数: 32

約数和(自身を含む): 35808768

約数和(自身を除く): 15839313

約数列:

[1, 3, 5, 11, 15, 33, 37, 55, 111, 165, 185, 407, 555, 1221, 2035, 3271, 6105, 9813, 16355, 35981, 49065, 107943, 121027, 179905, 363081, 539715, 605135, 1331297, 1815405, 3993891, 6656485, 19969455]

約数ペア:

[(1, 19969455), (3, 6656485), (5, 3993891), (11, 1815405), (15, 1331297), (33, 605135), (37, 539715), (55, 363081), (111, 179905), (165, 121027), (185, 107943), (407, 49065), (555, 35981), (1221, 16355), (2035, 9813), (3271, 6105)]