20649904

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{117329}}^1$

素因数の和:117348

約数の個数: 20

約数和(自身を含む): 43646760

約数和(自身を除く): 22996856

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 117329, 234658, 469316, 938632, 1290619, 1877264, 2581238, 5162476, 10324952, 20649904]

約数ペア:

[(1, 20649904), (2, 10324952), (4, 5162476), (8, 2581238), (11, 1877264), (16, 1290619), (22, 938632), (44, 469316), (88, 234658), (176, 117329)]