19967660

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{173}}^1\times {\mathrm{199}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 43848000

約数和(自身を除く): 23880340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 173, 199, 290, 346, 398, 580, 692, 796, 865, 995, 1730, 1990, 3460, 3980, 5017, 5771, 10034, 11542, 20068, 23084, 25085, 28855, 34427, 50170, 57710, 68854, 100340, 115420, 137708, 172135, 344270, 688540, 998383, 1996766, 3993532, 4991915, 9983830, 19967660]

約数ペア:

[(1, 19967660), (2, 9983830), (4, 4991915), (5, 3993532), (10, 1996766), (20, 998383), (29, 688540), (58, 344270), (116, 172135), (145, 137708), (173, 115420), (199, 100340), (290, 68854), (346, 57710), (398, 50170), (580, 34427), (692, 28855), (796, 25085), (865, 23084), (995, 20068), (1730, 11542), (1990, 10034), (3460, 5771), (3980, 5017)]