20218173640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72207763}}^1$

素因数の和:72207781

約数の個数: 32

約数和(自身を含む): 51989590080

約数和(自身を除く): 31771416440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72207763, 144415526, 288831052, 361038815, 505454341, 577662104, 722077630, 1010908682, 1444155260, 2021817364, 2527271705, 2888310520, 4043634728, 5054543410, 10109086820, 20218173640]

約数ペア:

[(1, 20218173640), (2, 10109086820), (4, 5054543410), (5, 4043634728), (7, 2888310520), (8, 2527271705), (10, 2021817364), (14, 1444155260), (20, 1010908682), (28, 722077630), (35, 577662104), (40, 505454341), (56, 361038815), (70, 288831052), (140, 144415526), (280, 72207763)]