161538940

素因数分解:

$2^2\times 5^1\times {\mathrm{829}}^1\times {\mathrm{9743}}^1$

素因数の和:10581

約数の個数: 24

約数和(自身を含む): 339675840

約数和(自身を除く): 178136900

約数列:

[1, 2, 4, 5, 10, 20, 829, 1658, 3316, 4145, 8290, 9743, 16580, 19486, 38972, 48715, 97430, 194860, 8076947, 16153894, 32307788, 40384735, 80769470, 161538940]

約数ペア:

[(1, 161538940), (2, 80769470), (4, 40384735), (5, 32307788), (10, 16153894), (20, 8076947), (829, 194860), (1658, 97430), (3316, 48715), (4145, 38972), (8290, 19486), (9743, 16580)]