12712840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{45403}}^1$

素因数の和:45421

約数の個数: 32

約数和(自身を含む): 32690880

約数和(自身を除く): 19978040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 45403, 90806, 181612, 227015, 317821, 363224, 454030, 635642, 908060, 1271284, 1589105, 1816120, 2542568, 3178210, 6356420, 12712840]

約数ペア:

[(1, 12712840), (2, 6356420), (4, 3178210), (5, 2542568), (7, 1816120), (8, 1589105), (10, 1271284), (14, 908060), (20, 635642), (28, 454030), (35, 363224), (40, 317821), (56, 227015), (70, 181612), (140, 90806), (280, 45403)]