19800011

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{8867}}^1$

素因数の和:8914

約数の個数: 16

約数和(自身を含む): 25539840

約数和(自身を除く): 5739829

約数列:

[1, 7, 11, 29, 77, 203, 319, 2233, 8867, 62069, 97537, 257143, 682759, 1800001, 2828573, 19800011]

約数ペア:

[(1, 19800011), (7, 2828573), (11, 1800001), (29, 682759), (77, 257143), (203, 97537), (319, 62069), (2233, 8867)]