21187952

素因数分解:

$2^4\times {\mathrm{113}}^1\times {\mathrm{11719}}^1$

素因数の和:11840

約数の個数: 20

約数和(自身を含む): 41418480

約数和(自身を除く): 20230528

約数列:

[1, 2, 4, 8, 16, 113, 226, 452, 904, 1808, 11719, 23438, 46876, 93752, 187504, 1324247, 2648494, 5296988, 10593976, 21187952]

約数ペア:

[(1, 21187952), (2, 10593976), (4, 5296988), (8, 2648494), (16, 1324247), (113, 187504), (226, 93752), (452, 46876), (904, 23438), (1808, 11719)]