21358215

素因数分解:

$3^3\times 5^1\times {\mathrm{158209}}^1$

素因数の和:158223

約数の個数: 16

約数和(自身を含む): 37970400

約数和(自身を除く): 16612185

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 158209, 474627, 791045, 1423881, 2373135, 4271643, 7119405, 21358215]

約数ペア:

[(1, 21358215), (3, 7119405), (5, 4271643), (9, 2373135), (15, 1423881), (27, 791045), (45, 474627), (135, 158209)]