640892

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{487}}^1$

素因数の和:545

約数の個数: 24

約数和(自身を含む): 1311744

約数和(自身を除く): 670852

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 487, 658, 974, 1316, 1948, 3409, 6818, 13636, 22889, 45778, 91556, 160223, 320446, 640892]

約数ペア:

[(1, 640892), (2, 320446), (4, 160223), (7, 91556), (14, 45778), (28, 22889), (47, 13636), (94, 6818), (188, 3409), (329, 1948), (487, 1316), (658, 974)]