21541120

素因数分解:

$2^8\times 5^1\times {\mathrm{16829}}^1$

素因数の和:16850

約数の個数: 36

約数和(自身を含む): 51600780

約数和(自身を除く): 30059660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16829, 33658, 67316, 84145, 134632, 168290, 269264, 336580, 538528, 673160, 1077056, 1346320, 2154112, 2692640, 4308224, 5385280, 10770560, 21541120]

約数ペア:

[(1, 21541120), (2, 10770560), (4, 5385280), (5, 4308224), (8, 2692640), (10, 2154112), (16, 1346320), (20, 1077056), (32, 673160), (40, 538528), (64, 336580), (80, 269264), (128, 168290), (160, 134632), (256, 84145), (320, 67316), (640, 33658), (1280, 16829)]