21066818

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{8447}}^1$

素因数の和:8521

約数の個数: 16

約数和(自身を含む): 33454080

約数和(自身を除く): 12387262

約数列:

[1, 2, 29, 43, 58, 86, 1247, 2494, 8447, 16894, 244963, 363221, 489926, 726442, 10533409, 21066818]

約数ペア:

[(1, 21066818), (2, 10533409), (29, 726442), (43, 489926), (58, 363221), (86, 244963), (1247, 16894), (2494, 8447)]