18213769

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:189

約数の個数: 32

約数和(自身を含む): 23224320

約数和(自身を除く): 5010551

約数列:

[1, 7, 23, 29, 47, 83, 161, 203, 329, 581, 667, 1081, 1363, 1909, 2407, 3901, 4669, 7567, 9541, 13363, 16849, 27307, 31349, 55361, 89723, 113129, 219443, 387527, 628061, 791903, 2601967, 18213769]

約数ペア:

[(1, 18213769), (7, 2601967), (23, 791903), (29, 628061), (47, 387527), (83, 219443), (161, 113129), (203, 89723), (329, 55361), (581, 31349), (667, 27307), (1081, 16849), (1363, 13363), (1909, 9541), (2407, 7567), (3901, 4669)]