1287880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2927}}^1$

素因数の和:2949

約数の個数: 32

約数和(自身を含む): 3162240

約数和(自身を除く): 1874360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 2927, 5854, 11708, 14635, 23416, 29270, 32197, 58540, 64394, 117080, 128788, 160985, 257576, 321970, 643940, 1287880]

約数ペア:

[(1, 1287880), (2, 643940), (4, 321970), (5, 257576), (8, 160985), (10, 128788), (11, 117080), (20, 64394), (22, 58540), (40, 32197), (44, 29270), (55, 23416), (88, 14635), (110, 11708), (220, 5854), (440, 2927)]