21735680

素因数分解:

$2^8\times 5^1\times {\mathrm{16981}}^1$

素因数の和:17002

約数の個数: 36

約数和(自身を含む): 52066812

約数和(自身を除く): 30331132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16981, 33962, 67924, 84905, 135848, 169810, 271696, 339620, 543392, 679240, 1086784, 1358480, 2173568, 2716960, 4347136, 5433920, 10867840, 21735680]

約数ペア:

[(1, 21735680), (2, 10867840), (4, 5433920), (5, 4347136), (8, 2716960), (10, 2173568), (16, 1358480), (20, 1086784), (32, 679240), (40, 543392), (64, 339620), (80, 271696), (128, 169810), (160, 135848), (256, 84905), (320, 67924), (640, 33962), (1280, 16981)]