18940173

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{12703}}^1$

素因数の和:12784

約数の個数: 16

約数和(自身を含む): 29270016

約数和(自身を除く): 10329843

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 12703, 38109, 88921, 266763, 901913, 2705739, 6313391, 18940173]

約数ペア:

[(1, 18940173), (3, 6313391), (7, 2705739), (21, 901913), (71, 266763), (213, 88921), (497, 38109), (1491, 12703)]