78405400

素因数分解:

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

素因数の和:521

約数の個数: 96

約数和(自身を含む): 196416000

約数和(自身を除く): 118010600

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 47, 50, 76, 94, 95, 100, 152, 188, 190, 200, 235, 376, 380, 439, 470, 475, 760, 878, 893, 940, 950, 1175, 1756, 1786, 1880, 1900, 2195, 2350, 3512, 3572, 3800, 4390, 4465, 4700, 7144, 8341, 8780, 8930, 9400, 10975, 16682, 17560, 17860, 20633, 21950, 22325, 33364, 35720, 41266, 41705, 43900, 44650, 66728, 82532, 83410, 87800, 89300, 103165, 165064, 166820, 178600, 206330, 208525, 333640, 392027, 412660, 417050, 515825, 784054, 825320, 834100, 1031650, 1568108, 1668200, 1960135, 2063300, 3136216, 3920270, 4126600, 7840540, 9800675, 15681080, 19601350, 39202700, 78405400]

約数ペア:

[(1, 78405400), (2, 39202700), (4, 19601350), (5, 15681080), (8, 9800675), (10, 7840540), (19, 4126600), (20, 3920270), (25, 3136216), (38, 2063300), (40, 1960135), (47, 1668200), (50, 1568108), (76, 1031650), (94, 834100), (95, 825320), (100, 784054), (152, 515825), (188, 417050), (190, 412660), (200, 392027), (235, 333640), (376, 208525), (380, 206330), (439, 178600), (470, 166820), (475, 165064), (760, 103165), (878, 89300), (893, 87800), (940, 83410), (950, 82532), (1175, 66728), (1756, 44650), (1786, 43900), (1880, 41705), (1900, 41266), (2195, 35720), (2350, 33364), (3512, 22325), (3572, 21950), (3800, 20633), (4390, 17860), (4465, 17560), (4700, 16682), (7144, 10975), (8341, 9400), (8780, 8930)]