21578224

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70981}}^1$

素因数の和:71008

約数の個数: 20

約数和(自身を含む): 44008840

約数和(自身を除く): 22430616

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70981, 141962, 283924, 567848, 1135696, 1348639, 2697278, 5394556, 10789112, 21578224]

約数ペア:

[(1, 21578224), (2, 10789112), (4, 5394556), (8, 2697278), (16, 1348639), (19, 1135696), (38, 567848), (76, 283924), (152, 141962), (304, 70981)]