81909815

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{14159}}^1$

素因数の和:14266

約数の個数: 16

約数和(自身を含む): 107049600

約数和(自身を除く): 25139785

約数列:

[1, 5, 13, 65, 89, 445, 1157, 5785, 14159, 70795, 184067, 920335, 1260151, 6300755, 16381963, 81909815]

約数ペア:

[(1, 81909815), (5, 16381963), (13, 6300755), (65, 1260151), (89, 920335), (445, 184067), (1157, 70795), (5785, 14159)]