643994

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:110

約数の個数: 32

約数和(自身を含む): 1161216

約数和(自身を除く): 517222

約数列:

[1, 2, 13, 17, 26, 31, 34, 47, 62, 94, 221, 403, 442, 527, 611, 799, 806, 1054, 1222, 1457, 1598, 2914, 6851, 10387, 13702, 18941, 20774, 24769, 37882, 49538, 321997, 643994]

約数ペア:

[(1, 643994), (2, 321997), (13, 49538), (17, 37882), (26, 24769), (31, 20774), (34, 18941), (47, 13702), (62, 10387), (94, 6851), (221, 2914), (403, 1598), (442, 1457), (527, 1222), (611, 1054), (799, 806)]