12402920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{7211}}^1$

素因数の和:7265

約数の個数: 32

約数和(自身を含む): 28559520

約数和(自身を除く): 16156600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 7211, 14422, 28844, 36055, 57688, 72110, 144220, 288440, 310073, 620146, 1240292, 1550365, 2480584, 3100730, 6201460, 12402920]

約数ペア:

[(1, 12402920), (2, 6201460), (4, 3100730), (5, 2480584), (8, 1550365), (10, 1240292), (20, 620146), (40, 310073), (43, 288440), (86, 144220), (172, 72110), (215, 57688), (344, 36055), (430, 28844), (860, 14422), (1720, 7211)]