12740840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{45503}}^1$

素因数の和:45521

約数の個数: 32

約数和(自身を含む): 32762880

約数和(自身を除く): 20022040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 45503, 91006, 182012, 227515, 318521, 364024, 455030, 637042, 910060, 1274084, 1592605, 1820120, 2548168, 3185210, 6370420, 12740840]

約数ペア:

[(1, 12740840), (2, 6370420), (4, 3185210), (5, 2548168), (7, 1820120), (8, 1592605), (10, 1274084), (14, 910060), (20, 637042), (28, 455030), (35, 364024), (40, 318521), (56, 227515), (70, 182012), (140, 91006), (280, 45503)]