20408949838

素因数分解:

$2^1\times {\mathrm{269}}^1\times {\mathrm{271}}^1\times {\mathrm{139981}}^1$

素因数の和:140523

約数の個数: 16

約数和(自身を含む): 30840834240

約数和(自身を除く): 10431884402

約数列:

[1, 2, 269, 271, 538, 542, 72899, 139981, 145798, 279962, 37654889, 37934851, 75309778, 75869702, 10204474919, 20408949838]

約数ペア:

[(1, 20408949838), (2, 10204474919), (269, 75869702), (271, 75309778), (538, 37934851), (542, 37654889), (72899, 279962), (139981, 145798)]