18420311

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2851}}^1$

素因数の和:2942

約数の個数: 16

約数和(自身を含む): 22998528

約数和(自身を除く): 4578217

約数列:

[1, 7, 13, 71, 91, 497, 923, 2851, 6461, 19957, 37063, 202421, 259441, 1416947, 2631473, 18420311]

約数ペア:

[(1, 18420311), (7, 2631473), (13, 1416947), (71, 259441), (91, 202421), (497, 37063), (923, 19957), (2851, 6461)]