21992191

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{541}}^1$

素因数の和:666

約数の個数: 16

約数和(自身を含む): 24585120

約数和(自身を除く): 2592929

約数列:

[1, 13, 53, 59, 541, 689, 767, 3127, 7033, 28673, 31919, 40651, 372749, 414947, 1691707, 21992191]

約数ペア:

[(1, 21992191), (13, 1691707), (53, 414947), (59, 372749), (541, 40651), (689, 31919), (767, 28673), (3127, 7033)]