21981167

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{523}}^1$

素因数の和:650

約数の個数: 16

約数和(自身を含む): 24560928

約数和(自身を除く): 2579761

約数列:

[1, 13, 53, 61, 523, 689, 793, 3233, 6799, 27719, 31903, 42029, 360347, 414739, 1690859, 21981167]

約数ペア:

[(1, 21981167), (13, 1690859), (53, 414739), (61, 360347), (523, 42029), (689, 31903), (793, 27719), (3233, 6799)]