20506400

素因数分解:

$2^5\times 5^2\times {\mathrm{25633}}^1$

素因数の和:25653

約数の個数: 36

約数和(自身を含む): 50063202

約数和(自身を除く): 29556802

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 25633, 51266, 102532, 128165, 205064, 256330, 410128, 512660, 640825, 820256, 1025320, 1281650, 2050640, 2563300, 4101280, 5126600, 10253200, 20506400]

約数ペア:

[(1, 20506400), (2, 10253200), (4, 5126600), (5, 4101280), (8, 2563300), (10, 2050640), (16, 1281650), (20, 1025320), (25, 820256), (32, 640825), (40, 512660), (50, 410128), (80, 256330), (100, 205064), (160, 128165), (200, 102532), (400, 51266), (800, 25633)]