66557680

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{16979}}^1$

素因数の和:17006

約数の個数: 60

約数和(自身を含む): 180021960

約数和(自身を除く): 113464280

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, 16979, 33958, 67916, 84895, 118853, 135832, 169790, 237706, 271664, 339580, 475412, 594265, 679160, 831971, 950824, 1188530, 1358320, 1663942, 1901648, 2377060, 3327884, 4159855, 4754120, 6655768, 8319710, 9508240, 13311536, 16639420, 33278840, 66557680]

約数ペア:

[(1, 66557680), (2, 33278840), (4, 16639420), (5, 13311536), (7, 9508240), (8, 8319710), (10, 6655768), (14, 4754120), (16, 4159855), (20, 3327884), (28, 2377060), (35, 1901648), (40, 1663942), (49, 1358320), (56, 1188530), (70, 950824), (80, 831971), (98, 679160), (112, 594265), (140, 475412), (196, 339580), (245, 271664), (280, 237706), (392, 169790), (490, 135832), (560, 118853), (784, 84895), (980, 67916), (1960, 33958), (3920, 16979)]