55399880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19507}}^1$

素因数の和:19589

約数の個数: 32

約数和(自身を含む): 126411840

約数和(自身を除く): 71011960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 19507, 39014, 78028, 97535, 156056, 195070, 390140, 780280, 1384997, 2769994, 5539988, 6924985, 11079976, 13849970, 27699940, 55399880]

約数ペア:

[(1, 55399880), (2, 27699940), (4, 13849970), (5, 11079976), (8, 6924985), (10, 5539988), (20, 2769994), (40, 1384997), (71, 780280), (142, 390140), (284, 195070), (355, 156056), (568, 97535), (710, 78028), (1420, 39014), (2840, 19507)]