28104760

素因数分解:

$2^3\times 5^1\times {\mathrm{709}}^1\times {\mathrm{991}}^1$

素因数の和:1711

約数の個数: 32

約数和(自身を含む): 63388800

約数和(自身を除く): 35284040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 709, 991, 1418, 1982, 2836, 3545, 3964, 4955, 5672, 7090, 7928, 9910, 14180, 19820, 28360, 39640, 702619, 1405238, 2810476, 3513095, 5620952, 7026190, 14052380, 28104760]

約数ペア:

[(1, 28104760), (2, 14052380), (4, 7026190), (5, 5620952), (8, 3513095), (10, 2810476), (20, 1405238), (40, 702619), (709, 39640), (991, 28360), (1418, 19820), (1982, 14180), (2836, 9910), (3545, 7928), (3964, 7090), (4955, 5672)]