18138981

素因数分解:

$3^1\times 7^1\times {\mathrm{607}}^1\times {\mathrm{1423}}^1$

素因数の和:2040

約数の個数: 16

約数和(自身を含む): 27705344

約数和(自身を除く): 9566363

約数列:

[1, 3, 7, 21, 607, 1423, 1821, 4249, 4269, 9961, 12747, 29883, 863761, 2591283, 6046327, 18138981]

約数ペア:

[(1, 18138981), (3, 6046327), (7, 2591283), (21, 863761), (607, 29883), (1423, 12747), (1821, 9961), (4249, 4269)]