20111905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{9883}}^1$

素因数の和:9936

約数の個数: 16

約数和(自身を含む): 27042624

約数和(自身を除く): 6930719

約数列:

[1, 5, 11, 37, 55, 185, 407, 2035, 9883, 49415, 108713, 365671, 543565, 1828355, 4022381, 20111905]

約数ペア:

[(1, 20111905), (5, 4022381), (11, 1828355), (37, 543565), (55, 365671), (185, 108713), (407, 49415), (2035, 9883)]