19487909

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{151}}^1\times {\mathrm{179}}^1$

素因数の和:440

約数の個数: 16

約数和(自身を含む): 22763520

約数和(自身を除く): 3275611

約数列:

[1, 7, 103, 151, 179, 721, 1057, 1253, 15553, 18437, 27029, 108871, 129059, 189203, 2783987, 19487909]

約数ペア:

[(1, 19487909), (7, 2783987), (103, 189203), (151, 129059), (179, 108871), (721, 27029), (1057, 18437), (1253, 15553)]