21247292

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{643}}^1\times {\mathrm{751}}^1$

素因数の和:1409

約数の個数: 24

約数和(自身を含む): 40680192

約数和(自身を除く): 19432900

約数列:

[1, 2, 4, 11, 22, 44, 643, 751, 1286, 1502, 2572, 3004, 7073, 8261, 14146, 16522, 28292, 33044, 482893, 965786, 1931572, 5311823, 10623646, 21247292]

約数ペア:

[(1, 21247292), (2, 10623646), (4, 5311823), (11, 1931572), (22, 965786), (44, 482893), (643, 33044), (751, 28292), (1286, 16522), (1502, 14146), (2572, 8261), (3004, 7073)]