21538869

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{8941}}^1$

素因数の和:9028

約数の個数: 16

約数和(自身を含む): 31761984

約数和(自身を除く): 10223115

約数列:

[1, 3, 11, 33, 73, 219, 803, 2409, 8941, 26823, 98351, 295053, 652693, 1958079, 7179623, 21538869]

約数ペア:

[(1, 21538869), (3, 7179623), (11, 1958079), (33, 652693), (73, 295053), (219, 98351), (803, 26823), (2409, 8941)]