19887381

素因数分解:

$3^2\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{337}}^1$

素因数の和:505

約数の個数: 24

約数和(自身を含む): 29527680

約数和(自身を除く): 9640299

約数列:

[1, 3, 9, 79, 83, 237, 249, 337, 711, 747, 1011, 3033, 6557, 19671, 26623, 27971, 59013, 79869, 83913, 239607, 251739, 2209709, 6629127, 19887381]

約数ペア:

[(1, 19887381), (3, 6629127), (9, 2209709), (79, 251739), (83, 239607), (237, 83913), (249, 79869), (337, 59013), (711, 27971), (747, 26623), (1011, 19671), (3033, 6557)]