81022820

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{23417}}^1$

素因数の和:23599

約数の個数: 24

約数和(自身を含む): 171138744

約数和(自身を除く): 90115924

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 692, 865, 1730, 3460, 23417, 46834, 93668, 117085, 234170, 468340, 4051141, 8102282, 16204564, 20255705, 40511410, 81022820]

約数ペア:

[(1, 81022820), (2, 40511410), (4, 20255705), (5, 16204564), (10, 8102282), (20, 4051141), (173, 468340), (346, 234170), (692, 117085), (865, 93668), (1730, 46834), (3460, 23417)]