20920828

素因数分解:

$2^2\times {\mathrm{47}}^1\times {\mathrm{257}}^1\times {\mathrm{433}}^1$

素因数の和:741

約数の個数: 24

約数和(自身を含む): 37622592

約数和(自身を除く): 16701764

約数列:

[1, 2, 4, 47, 94, 188, 257, 433, 514, 866, 1028, 1732, 12079, 20351, 24158, 40702, 48316, 81404, 111281, 222562, 445124, 5230207, 10460414, 20920828]

約数ペア:

[(1, 20920828), (2, 10460414), (4, 5230207), (47, 445124), (94, 222562), (188, 111281), (257, 81404), (433, 48316), (514, 40702), (866, 24158), (1028, 20351), (1732, 12079)]