20201005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{1181}}^1$

素因数の和:1508

約数の個数: 16

約数和(自身を含む): 26552448

約数和(自身を除く): 6351443

約数列:

[1, 5, 11, 55, 311, 1181, 1555, 3421, 5905, 12991, 17105, 64955, 367291, 1836455, 4040201, 20201005]

約数ペア:

[(1, 20201005), (5, 4040201), (11, 1836455), (55, 367291), (311, 64955), (1181, 17105), (1555, 12991), (3421, 5905)]