20724403

素因数分解:

$7^3\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:152

約数の個数: 32

約数和(自身を含む): 26265600

約数和(自身を除く): 5541197

約数列:

[1, 7, 23, 37, 49, 71, 161, 259, 343, 497, 851, 1127, 1633, 1813, 2627, 3479, 5957, 7889, 11431, 12691, 18389, 24353, 41699, 60421, 80017, 128723, 291893, 422947, 560119, 901061, 2960629, 20724403]

約数ペア:

[(1, 20724403), (7, 2960629), (23, 901061), (37, 560119), (49, 422947), (71, 291893), (161, 128723), (259, 80017), (343, 60421), (497, 41699), (851, 24353), (1127, 18389), (1633, 12691), (1813, 11431), (2627, 7889), (3479, 5957)]