20545778

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{7129}}^1$

素因数の和:7273

約数の個数: 16

約数和(自身を含む): 33881760

約数和(自身を除く): 13335982

約数列:

[1, 2, 11, 22, 131, 262, 1441, 2882, 7129, 14258, 78419, 156838, 933899, 1867798, 10272889, 20545778]

約数ペア:

[(1, 20545778), (2, 10272889), (11, 1867798), (22, 933899), (131, 156838), (262, 78419), (1441, 14258), (2882, 7129)]