21393526

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{173}}^1$

素因数の和:277

約数の個数: 48

約数和(自身を含む): 41100192

約数和(自身を除く): 19706666

約数列:

[1, 2, 7, 11, 14, 22, 73, 77, 121, 146, 154, 173, 242, 346, 511, 803, 847, 1022, 1211, 1606, 1694, 1903, 2422, 3806, 5621, 8833, 11242, 12629, 13321, 17666, 20933, 25258, 26642, 41866, 61831, 88403, 123662, 138919, 146531, 176806, 277838, 293062, 972433, 1528109, 1944866, 3056218, 10696763, 21393526]

約数ペア:

[(1, 21393526), (2, 10696763), (7, 3056218), (11, 1944866), (14, 1528109), (22, 972433), (73, 293062), (77, 277838), (121, 176806), (146, 146531), (154, 138919), (173, 123662), (242, 88403), (346, 61831), (511, 41866), (803, 26642), (847, 25258), (1022, 20933), (1211, 17666), (1606, 13321), (1694, 12629), (1903, 11242), (2422, 8833), (3806, 5621)]