21620800

素因数分解:

$2^6\times 5^2\times {\mathrm{13513}}^1$

素因数の和:13535

約数の個数: 42

約数和(自身を含む): 53204618

約数和(自身を除く): 31583818

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 13513, 27026, 54052, 67565, 108104, 135130, 216208, 270260, 337825, 432416, 540520, 675650, 864832, 1081040, 1351300, 2162080, 2702600, 4324160, 5405200, 10810400, 21620800]

約数ペア:

[(1, 21620800), (2, 10810400), (4, 5405200), (5, 4324160), (8, 2702600), (10, 2162080), (16, 1351300), (20, 1081040), (25, 864832), (32, 675650), (40, 540520), (50, 432416), (64, 337825), (80, 270260), (100, 216208), (160, 135130), (200, 108104), (320, 67565), (400, 54052), (800, 27026), (1600, 13513)]