15681080

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{439}}^1$

素因数の和:516

約数の個数: 64

約数和(自身を含む): 38016000

約数和(自身を除く): 22334920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 47, 76, 94, 95, 152, 188, 190, 235, 376, 380, 439, 470, 760, 878, 893, 940, 1756, 1786, 1880, 2195, 3512, 3572, 4390, 4465, 7144, 8341, 8780, 8930, 16682, 17560, 17860, 20633, 33364, 35720, 41266, 41705, 66728, 82532, 83410, 103165, 165064, 166820, 206330, 333640, 392027, 412660, 784054, 825320, 1568108, 1960135, 3136216, 3920270, 7840540, 15681080]

約数ペア:

[(1, 15681080), (2, 7840540), (4, 3920270), (5, 3136216), (8, 1960135), (10, 1568108), (19, 825320), (20, 784054), (38, 412660), (40, 392027), (47, 333640), (76, 206330), (94, 166820), (95, 165064), (152, 103165), (188, 83410), (190, 82532), (235, 66728), (376, 41705), (380, 41266), (439, 35720), (470, 33364), (760, 20633), (878, 17860), (893, 17560), (940, 16682), (1756, 8930), (1786, 8780), (1880, 8341), (2195, 7144), (3512, 4465), (3572, 4390)]