65709520

素因数分解:

$2^4\times 5^1\times {\mathrm{439}}^1\times {\mathrm{1871}}^1$

素因数の和:2323

約数の個数: 40

約数和(自身を含む): 153204480

約数和(自身を除く): 87494960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 439, 878, 1756, 1871, 2195, 3512, 3742, 4390, 7024, 7484, 8780, 9355, 14968, 17560, 18710, 29936, 35120, 37420, 74840, 149680, 821369, 1642738, 3285476, 4106845, 6570952, 8213690, 13141904, 16427380, 32854760, 65709520]

約数ペア:

[(1, 65709520), (2, 32854760), (4, 16427380), (5, 13141904), (8, 8213690), (10, 6570952), (16, 4106845), (20, 3285476), (40, 1642738), (80, 821369), (439, 149680), (878, 74840), (1756, 37420), (1871, 35120), (2195, 29936), (3512, 18710), (3742, 17560), (4390, 14968), (7024, 9355), (7484, 8780)]