21194485

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{7583}}^1$

素因数の和:7644

約数の個数: 16

約数和(自身を含む): 28030464

約数和(自身を除く): 6835979

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 7583, 37915, 98579, 326069, 492895, 1630345, 4238897, 21194485]

約数ペア:

[(1, 21194485), (5, 4238897), (13, 1630345), (43, 492895), (65, 326069), (215, 98579), (559, 37915), (2795, 7583)]