26881280

素因数分解:

$2^8\times 5^1\times {\mathrm{21001}}^1$

素因数の和:21022

約数の個数: 36

約数和(自身を含む): 64392132

約数和(自身を除く): 37510852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 21001, 42002, 84004, 105005, 168008, 210010, 336016, 420020, 672032, 840040, 1344064, 1680080, 2688128, 3360160, 5376256, 6720320, 13440640, 26881280]

約数ペア:

[(1, 26881280), (2, 13440640), (4, 6720320), (5, 5376256), (8, 3360160), (10, 2688128), (16, 1680080), (20, 1344064), (32, 840040), (40, 672032), (64, 420020), (80, 336016), (128, 210010), (160, 168008), (256, 105005), (320, 84004), (640, 42002), (1280, 21001)]