81193580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{312283}}^1$

素因数の和:312305

約数の個数: 24

約数和(自身を含む): 183622992

約数和(自身を除く): 102429412

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 312283, 624566, 1249132, 1561415, 3122830, 4059679, 6245660, 8119358, 16238716, 20298395, 40596790, 81193580]

約数ペア:

[(1, 81193580), (2, 40596790), (4, 20298395), (5, 16238716), (10, 8119358), (13, 6245660), (20, 4059679), (26, 3122830), (52, 1561415), (65, 1249132), (130, 624566), (260, 312283)]