21394805

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{1423}}^1$

素因数の和:1556

約数の個数: 16

約数和(自身を含む): 26793984

約数和(自身を除く): 5399179

約数列:

[1, 5, 31, 97, 155, 485, 1423, 3007, 7115, 15035, 44113, 138031, 220565, 690155, 4278961, 21394805]

約数ペア:

[(1, 21394805), (5, 4278961), (31, 690155), (97, 220565), (155, 138031), (485, 44113), (1423, 15035), (3007, 7115)]