20761465

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1\times {\mathrm{251}}^1$

素因数の和:560

約数の個数: 16

約数和(自身を含む): 25474176

約数和(自身を除く): 4712711

約数列:

[1, 5, 71, 233, 251, 355, 1165, 1255, 16543, 17821, 58483, 82715, 89105, 292415, 4152293, 20761465]

約数ペア:

[(1, 20761465), (5, 4152293), (71, 292415), (233, 89105), (251, 82715), (355, 58483), (1165, 17821), (1255, 16543)]