21812901

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{991}}^1$

素因数の和:1057

約数の個数: 32

約数和(自身を含む): 34283520

約数和(自身を除く): 12470619

約数列:

[1, 3, 11, 23, 29, 33, 69, 87, 253, 319, 667, 759, 957, 991, 2001, 2973, 7337, 10901, 22011, 22793, 28739, 32703, 68379, 86217, 250723, 316129, 660997, 752169, 948387, 1982991, 7270967, 21812901]

約数ペア:

[(1, 21812901), (3, 7270967), (11, 1982991), (23, 948387), (29, 752169), (33, 660997), (69, 316129), (87, 250723), (253, 86217), (319, 68379), (667, 32703), (759, 28739), (957, 22793), (991, 22011), (2001, 10901), (2973, 7337)]