259681175

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{61463}}^1$

素因数の和:61499

約数の個数: 18

約数和(自身を含む): 348685272

約数和(自身を除く): 89004097

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 61463, 307315, 799019, 1536575, 3995095, 10387247, 19975475, 51936235, 259681175]

約数ペア:

[(1, 259681175), (5, 51936235), (13, 19975475), (25, 10387247), (65, 3995095), (169, 1536575), (325, 799019), (845, 307315), (4225, 61463)]