20409872

素因数分解:

$2^4\times 7^3\times {\mathrm{3719}}^1$

素因数の和:3748

約数の個数: 40

約数和(自身を含む): 46128000

約数和(自身を除く): 25718128

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 343, 392, 686, 784, 1372, 2744, 3719, 5488, 7438, 14876, 26033, 29752, 52066, 59504, 104132, 182231, 208264, 364462, 416528, 728924, 1275617, 1457848, 2551234, 2915696, 5102468, 10204936, 20409872]

約数ペア:

[(1, 20409872), (2, 10204936), (4, 5102468), (7, 2915696), (8, 2551234), (14, 1457848), (16, 1275617), (28, 728924), (49, 416528), (56, 364462), (98, 208264), (112, 182231), (196, 104132), (343, 59504), (392, 52066), (686, 29752), (784, 26033), (1372, 14876), (2744, 7438), (3719, 5488)]