21877535

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1\times {\mathrm{233}}^1$

素因数の和:538

約数の個数: 16

約数和(自身を含む): 26788320

約数和(自身を除く): 4910785

約数列:

[1, 5, 89, 211, 233, 445, 1055, 1165, 18779, 20737, 49163, 93895, 103685, 245815, 4375507, 21877535]

約数ペア:

[(1, 21877535), (5, 4375507), (89, 245815), (211, 103685), (233, 93895), (445, 49163), (1055, 20737), (1165, 18779)]