15217881

素因数分解:

$3^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{643}}^1$

素因数の和:690

約数の個数: 32

約数和(自身を含む): 24729600

約数和(自身を除く): 9511719

約数列:

[1, 3, 7, 21, 23, 49, 69, 147, 161, 343, 483, 643, 1029, 1127, 1929, 3381, 4501, 7889, 13503, 14789, 23667, 31507, 44367, 94521, 103523, 220549, 310569, 661647, 724661, 2173983, 5072627, 15217881]

約数ペア:

[(1, 15217881), (3, 5072627), (7, 2173983), (21, 724661), (23, 661647), (49, 310569), (69, 220549), (147, 103523), (161, 94521), (343, 44367), (483, 31507), (643, 23667), (1029, 14789), (1127, 13503), (1929, 7889), (3381, 4501)]