81369872

素因数分解:

$2^4\times {\mathrm{2003}}^1\times {\mathrm{2539}}^1$

素因数の和:4550

約数の個数: 20

約数和(自身を含む): 157794960

約数和(自身を除く): 76425088

約数列:

[1, 2, 4, 8, 16, 2003, 2539, 4006, 5078, 8012, 10156, 16024, 20312, 32048, 40624, 5085617, 10171234, 20342468, 40684936, 81369872]

約数ペア:

[(1, 81369872), (2, 40684936), (4, 20342468), (8, 10171234), (16, 5085617), (2003, 40624), (2539, 32048), (4006, 20312), (5078, 16024), (8012, 10156)]