19783887

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{9887}}^1$

素因数の和:9942

約数の個数: 16

約数和(自身を含む): 28477440

約数和(自身を除く): 8693553

約数列:

[1, 3, 23, 29, 69, 87, 667, 2001, 9887, 29661, 227401, 286723, 682203, 860169, 6594629, 19783887]

約数ペア:

[(1, 19783887), (3, 6594629), (23, 860169), (29, 682203), (69, 286723), (87, 227401), (667, 29661), (2001, 9887)]