18857307

素因数分解:

$3^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{787}}^1$

素因数の和:967

約数の個数: 24

約数和(自身を含む): 29464896

約数和(自身を除く): 10607589

約数列:

[1, 3, 7, 21, 49, 147, 163, 489, 787, 1141, 2361, 3423, 5509, 7987, 16527, 23961, 38563, 115689, 128281, 384843, 897967, 2693901, 6285769, 18857307]

約数ペア:

[(1, 18857307), (3, 6285769), (7, 2693901), (21, 897967), (49, 384843), (147, 128281), (163, 115689), (489, 38563), (787, 23961), (1141, 16527), (2361, 7987), (3423, 5509)]