399032240

素因数分解:

$2^4\times 5^1\times {\mathrm{4987903}}^1$

素因数の和:4987916

約数の個数: 20

約数和(自身を含む): 927750144

約数和(自身を除く): 528717904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4987903, 9975806, 19951612, 24939515, 39903224, 49879030, 79806448, 99758060, 199516120, 399032240]

約数ペア:

[(1, 399032240), (2, 199516120), (4, 99758060), (5, 79806448), (8, 49879030), (10, 39903224), (16, 24939515), (20, 19951612), (40, 9975806), (80, 4987903)]