21204332

素因数分解:

$2^2\times {\mathrm{43}}^2\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:198

約数の個数: 36

約数和(自身を含む): 39434976

約数和(自身を除く): 18230644

約数列:

[1, 2, 4, 43, 47, 61, 86, 94, 122, 172, 188, 244, 1849, 2021, 2623, 2867, 3698, 4042, 5246, 5734, 7396, 8084, 10492, 11468, 86903, 112789, 123281, 173806, 225578, 246562, 347612, 451156, 493124, 5301083, 10602166, 21204332]

約数ペア:

[(1, 21204332), (2, 10602166), (4, 5301083), (43, 493124), (47, 451156), (61, 347612), (86, 246562), (94, 225578), (122, 173806), (172, 123281), (188, 112789), (244, 86903), (1849, 11468), (2021, 10492), (2623, 8084), (2867, 7396), (3698, 5734), (4042, 5246)]