78153880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{279121}}^1$

素因数の和:279139

約数の個数: 32

約数和(自身を含む): 200967840

約数和(自身を除く): 122813960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 279121, 558242, 1116484, 1395605, 1953847, 2232968, 2791210, 3907694, 5582420, 7815388, 9769235, 11164840, 15630776, 19538470, 39076940, 78153880]

約数ペア:

[(1, 78153880), (2, 39076940), (4, 19538470), (5, 15630776), (7, 11164840), (8, 9769235), (10, 7815388), (14, 5582420), (20, 3907694), (28, 2791210), (35, 2232968), (40, 1953847), (56, 1395605), (70, 1116484), (140, 558242), (280, 279121)]