20309444

素因数分解:

$2^2\times {\mathrm{89}}^2\times {\mathrm{641}}^1$

素因数の和:823

約数の個数: 18

約数和(自身を含む): 36001434

約数和(自身を除く): 15691990

約数列:

[1, 2, 4, 89, 178, 356, 641, 1282, 2564, 7921, 15842, 31684, 57049, 114098, 228196, 5077361, 10154722, 20309444]

約数ペア:

[(1, 20309444), (2, 10154722), (4, 5077361), (89, 228196), (178, 114098), (356, 57049), (641, 31684), (1282, 15842), (2564, 7921)]