21157254

素因数分解:

$2^1\times 3^3\times {\mathrm{391801}}^1$

素因数の和:391812

約数の個数: 16

約数和(自身を含む): 47016240

約数和(自身を除く): 25858986

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 391801, 783602, 1175403, 2350806, 3526209, 7052418, 10578627, 21157254]

約数ペア:

[(1, 21157254), (2, 10578627), (3, 7052418), (6, 3526209), (9, 2350806), (18, 1175403), (27, 783602), (54, 391801)]