21363865

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1\times {\mathrm{587}}^1$

素因数の和:872

約数の個数: 16

約数和(自身を含む): 26671680

約数和(自身を除く): 5307815

約数列:

[1, 5, 29, 145, 251, 587, 1255, 2935, 7279, 17023, 36395, 85115, 147337, 736685, 4272773, 21363865]

約数ペア:

[(1, 21363865), (5, 4272773), (29, 736685), (145, 147337), (251, 85115), (587, 36395), (1255, 17023), (2935, 7279)]