16867480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{563}}^1$

素因数の和:688

約数の個数: 64

約数和(自身を含む): 43856640

約数和(自身を除く): 26989160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 107, 140, 214, 280, 428, 535, 563, 749, 856, 1070, 1126, 1498, 2140, 2252, 2815, 2996, 3745, 3941, 4280, 4504, 5630, 5992, 7490, 7882, 11260, 14980, 15764, 19705, 22520, 29960, 31528, 39410, 60241, 78820, 120482, 157640, 240964, 301205, 421687, 481928, 602410, 843374, 1204820, 1686748, 2108435, 2409640, 3373496, 4216870, 8433740, 16867480]

約数ペア:

[(1, 16867480), (2, 8433740), (4, 4216870), (5, 3373496), (7, 2409640), (8, 2108435), (10, 1686748), (14, 1204820), (20, 843374), (28, 602410), (35, 481928), (40, 421687), (56, 301205), (70, 240964), (107, 157640), (140, 120482), (214, 78820), (280, 60241), (428, 39410), (535, 31528), (563, 29960), (749, 22520), (856, 19705), (1070, 15764), (1126, 14980), (1498, 11260), (2140, 7882), (2252, 7490), (2815, 5992), (2996, 5630), (3745, 4504), (3941, 4280)]