1239290438

素因数分解:

$2^1\times {\mathrm{103}}^1\times {\mathrm{863}}^1\times {\mathrm{6971}}^1$

素因数の和:7939

約数の個数: 16

約数和(自身を含む): 1879428096

約数和(自身を除く): 640137658

約数列:

[1, 2, 103, 206, 863, 1726, 6971, 13942, 88889, 177778, 718013, 1436026, 6015973, 12031946, 619645219, 1239290438]

約数ペア:

[(1, 1239290438), (2, 619645219), (103, 12031946), (206, 6015973), (863, 1436026), (1726, 718013), (6971, 177778), (13942, 88889)]