201640880

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{51439}}^1$

素因数の和:51466

約数の個数: 60

約数和(自身を含む): 545366880

約数和(自身を除く): 343726000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 51439, 102878, 205756, 257195, 360073, 411512, 514390, 720146, 823024, 1028780, 1440292, 1800365, 2057560, 2520511, 2880584, 3600730, 4115120, 5041022, 5761168, 7201460, 10082044, 12602555, 14402920, 20164088, 25205110, 28805840, 40328176, 50410220, 100820440, 201640880]

約数ペア:

[(1, 201640880), (2, 100820440), (4, 50410220), (5, 40328176), (7, 28805840), (8, 25205110), (10, 20164088), (14, 14402920), (16, 12602555), (20, 10082044), (28, 7201460), (35, 5761168), (40, 5041022), (49, 4115120), (56, 3600730), (70, 2880584), (80, 2520511), (98, 2057560), (112, 1800365), (140, 1440292), (196, 1028780), (245, 823024), (280, 720146), (392, 514390), (490, 411512), (560, 360073), (784, 257195), (980, 205756), (1960, 102878), (3920, 51439)]