21000969595

素因数分解:

$5^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1\times {\mathrm{1709}}^1$

素因数の和:2175

約数の個数: 32

約数和(自身を含む): 25856677440

約数和(自身を除く): 4855707845

約数列:

[1, 5, 73, 131, 257, 365, 655, 1285, 1709, 8545, 9563, 18761, 33667, 47815, 93805, 124757, 168335, 223879, 439213, 623785, 1119395, 2196065, 2457691, 12288455, 16343167, 32062549, 57536903, 81715835, 160312745, 287684515, 4200193919, 21000969595]

約数ペア:

[(1, 21000969595), (5, 4200193919), (73, 287684515), (131, 160312745), (257, 81715835), (365, 57536903), (655, 32062549), (1285, 16343167), (1709, 12288455), (8545, 2457691), (9563, 2196065), (18761, 1119395), (33667, 623785), (47815, 439213), (93805, 223879), (124757, 168335)]