81291025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{10067}}^1$

素因数の和:10113

約数の個数: 24

約数和(自身を含む): 112358880

約数和(自身を除く): 31067855

約数列:

[1, 5, 17, 19, 25, 85, 95, 323, 425, 475, 1615, 8075, 10067, 50335, 171139, 191273, 251675, 855695, 956365, 3251641, 4278475, 4781825, 16258205, 81291025]

約数ペア:

[(1, 81291025), (5, 16258205), (17, 4781825), (19, 4278475), (25, 3251641), (85, 956365), (95, 855695), (323, 251675), (425, 191273), (475, 171139), (1615, 50335), (8075, 10067)]