12806840

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{907}}^1$

素因数の和:1271

約数の個数: 32

約数和(自身を含む): 28928880

約数和(自身を除く): 16122040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 907, 1412, 1765, 1814, 2824, 3530, 3628, 4535, 7060, 7256, 9070, 14120, 18140, 36280, 320171, 640342, 1280684, 1600855, 2561368, 3201710, 6403420, 12806840]

約数ペア:

[(1, 12806840), (2, 6403420), (4, 3201710), (5, 2561368), (8, 1600855), (10, 1280684), (20, 640342), (40, 320171), (353, 36280), (706, 18140), (907, 14120), (1412, 9070), (1765, 7256), (1814, 7060), (2824, 4535), (3530, 3628)]