20721376

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{49811}}^1$

素因数の和:49834

約数の個数: 24

約数和(自身を含む): 43934184

約数和(自身を除く): 23212808

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 49811, 99622, 199244, 398488, 647543, 796976, 1295086, 1593952, 2590172, 5180344, 10360688, 20721376]

約数ペア:

[(1, 20721376), (2, 10360688), (4, 5180344), (8, 2590172), (13, 1593952), (16, 1295086), (26, 796976), (32, 647543), (52, 398488), (104, 199244), (208, 99622), (416, 49811)]