21507447

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{719}}^1$

素因数の和:807

約数の個数: 24

約数和(自身を含む): 31622400

約数和(自身を除く): 10114953

約数列:

[1, 3, 13, 39, 59, 169, 177, 507, 719, 767, 2157, 2301, 9347, 9971, 28041, 29913, 42421, 121511, 127263, 364533, 551473, 1654419, 7169149, 21507447]

約数ペア:

[(1, 21507447), (3, 7169149), (13, 1654419), (39, 551473), (59, 364533), (169, 127263), (177, 121511), (507, 42421), (719, 29913), (767, 28041), (2157, 9971), (2301, 9347)]