28935879

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1543}}^1$

素因数の和:1619

約数の個数: 32

約数和(自身を含む): 47431680

約数和(自身を除く): 18495801

約数列:

[1, 3, 7, 19, 21, 47, 57, 133, 141, 329, 399, 893, 987, 1543, 2679, 4629, 6251, 10801, 18753, 29317, 32403, 72521, 87951, 205219, 217563, 507647, 615657, 1377899, 1522941, 4133697, 9645293, 28935879]

約数ペア:

[(1, 28935879), (3, 9645293), (7, 4133697), (19, 1522941), (21, 1377899), (47, 615657), (57, 507647), (133, 217563), (141, 205219), (329, 87951), (399, 72521), (893, 32403), (987, 29317), (1543, 18753), (2679, 10801), (4629, 6251)]