21709145

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{227}}^1\times {\mathrm{617}}^1$

素因数の和:880

約数の個数: 16

約数和(自身を含む): 27053568

約数和(自身を除く): 5344423

約数列:

[1, 5, 31, 155, 227, 617, 1135, 3085, 7037, 19127, 35185, 95635, 140059, 700295, 4341829, 21709145]

約数ペア:

[(1, 21709145), (5, 4341829), (31, 700295), (155, 140059), (227, 95635), (617, 35185), (1135, 19127), (3085, 7037)]