18941517

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{6397}}^1$

素因数の和:6457

約数の個数: 24

約数和(自身を含む): 31938816

約数和(自身を除く): 12997299

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 6397, 19191, 44779, 57573, 134337, 300659, 403011, 901977, 2104613, 2705931, 6313839, 18941517]

約数ペア:

[(1, 18941517), (3, 6313839), (7, 2705931), (9, 2104613), (21, 901977), (47, 403011), (63, 300659), (141, 134337), (329, 57573), (423, 44779), (987, 19191), (2961, 6397)]