219921779

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{26203}}^1$

素因数の和:26330

約数の個数: 16

約数和(自身を含む): 276714240

約数和(自身を除く): 56792461

約数列:

[1, 7, 11, 77, 109, 763, 1199, 8393, 26203, 183421, 288233, 2017631, 2856127, 19992889, 31417397, 219921779]

約数ペア:

[(1, 219921779), (7, 31417397), (11, 19992889), (77, 2856127), (109, 2017631), (763, 288233), (1199, 183421), (8393, 26203)]