27921880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{99721}}^1$

素因数の和:99739

約数の個数: 32

約数和(自身を含む): 71799840

約数和(自身を除く): 43877960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 99721, 199442, 398884, 498605, 698047, 797768, 997210, 1396094, 1994420, 2792188, 3490235, 3988840, 5584376, 6980470, 13960940, 27921880]

約数ペア:

[(1, 27921880), (2, 13960940), (4, 6980470), (5, 5584376), (7, 3988840), (8, 3490235), (10, 2792188), (14, 1994420), (20, 1396094), (28, 997210), (35, 797768), (40, 698047), (56, 498605), (70, 398884), (140, 199442), (280, 99721)]