66420700

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{439}}^1$

素因数の和:559

約数の個数: 72

約数和(自身を含む): 154677600

約数和(自身を除く): 88256900

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 89, 100, 170, 178, 340, 356, 425, 439, 445, 850, 878, 890, 1513, 1700, 1756, 1780, 2195, 2225, 3026, 4390, 4450, 6052, 7463, 7565, 8780, 8900, 10975, 14926, 15130, 21950, 29852, 30260, 37315, 37825, 39071, 43900, 74630, 75650, 78142, 149260, 151300, 156284, 186575, 195355, 373150, 390710, 664207, 746300, 781420, 976775, 1328414, 1953550, 2656828, 3321035, 3907100, 6642070, 13284140, 16605175, 33210350, 66420700]

約数ペア:

[(1, 66420700), (2, 33210350), (4, 16605175), (5, 13284140), (10, 6642070), (17, 3907100), (20, 3321035), (25, 2656828), (34, 1953550), (50, 1328414), (68, 976775), (85, 781420), (89, 746300), (100, 664207), (170, 390710), (178, 373150), (340, 195355), (356, 186575), (425, 156284), (439, 151300), (445, 149260), (850, 78142), (878, 75650), (890, 74630), (1513, 43900), (1700, 39071), (1756, 37825), (1780, 37315), (2195, 30260), (2225, 29852), (3026, 21950), (4390, 15130), (4450, 14926), (6052, 10975), (7463, 8900), (7565, 8780)]