399339920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{713107}}^1$

素因数の和:713127

約数の個数: 40

約数和(自身を含む): 1061104704

約数和(自身を除く): 661764784

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 713107, 1426214, 2852428, 3565535, 4991749, 5704856, 7131070, 9983498, 11409712, 14262140, 19966996, 24958745, 28524280, 39933992, 49917490, 57048560, 79867984, 99834980, 199669960, 399339920]

約数ペア:

[(1, 399339920), (2, 199669960), (4, 99834980), (5, 79867984), (7, 57048560), (8, 49917490), (10, 39933992), (14, 28524280), (16, 24958745), (20, 19966996), (28, 14262140), (35, 11409712), (40, 9983498), (56, 7131070), (70, 5704856), (80, 4991749), (112, 3565535), (140, 2852428), (280, 1426214), (560, 713107)]