21131269636

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{74405879}}^1$

素因数の和:74405954

約数の個数: 12

約数和(自身を含む): 37500563520

約数和(自身を除く): 16369293884

約数列:

[1, 2, 4, 71, 142, 284, 74405879, 148811758, 297623516, 5282817409, 10565634818, 21131269636]

約数ペア:

[(1, 21131269636), (2, 10565634818), (4, 5282817409), (71, 297623516), (142, 148811758), (284, 74405879)]