64778000

素因数分解:

$2^4\times 5^3\times 7^2\times {\mathrm{661}}^1$

素因数の和:698

約数の個数: 120

約数和(自身を含む): 182481624

約数和(自身を除く): 117703624

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 125, 140, 175, 196, 200, 245, 250, 280, 350, 392, 400, 490, 500, 560, 661, 700, 784, 875, 980, 1000, 1225, 1322, 1400, 1750, 1960, 2000, 2450, 2644, 2800, 3305, 3500, 3920, 4627, 4900, 5288, 6125, 6610, 7000, 9254, 9800, 10576, 12250, 13220, 14000, 16525, 18508, 19600, 23135, 24500, 26440, 32389, 33050, 37016, 46270, 49000, 52880, 64778, 66100, 74032, 82625, 92540, 98000, 115675, 129556, 132200, 161945, 165250, 185080, 231350, 259112, 264400, 323890, 330500, 370160, 462700, 518224, 578375, 647780, 661000, 809725, 925400, 1156750, 1295560, 1322000, 1619450, 1850800, 2313500, 2591120, 3238900, 4048625, 4627000, 6477800, 8097250, 9254000, 12955600, 16194500, 32389000, 64778000]

約数ペア:

[(1, 64778000), (2, 32389000), (4, 16194500), (5, 12955600), (7, 9254000), (8, 8097250), (10, 6477800), (14, 4627000), (16, 4048625), (20, 3238900), (25, 2591120), (28, 2313500), (35, 1850800), (40, 1619450), (49, 1322000), (50, 1295560), (56, 1156750), (70, 925400), (80, 809725), (98, 661000), (100, 647780), (112, 578375), (125, 518224), (140, 462700), (175, 370160), (196, 330500), (200, 323890), (245, 264400), (250, 259112), (280, 231350), (350, 185080), (392, 165250), (400, 161945), (490, 132200), (500, 129556), (560, 115675), (661, 98000), (700, 92540), (784, 82625), (875, 74032), (980, 66100), (1000, 64778), (1225, 52880), (1322, 49000), (1400, 46270), (1750, 37016), (1960, 33050), (2000, 32389), (2450, 26440), (2644, 24500), (2800, 23135), (3305, 19600), (3500, 18508), (3920, 16525), (4627, 14000), (4900, 13220), (5288, 12250), (6125, 10576), (6610, 9800), (7000, 9254)]