20754560

素因数分解:

$2^7\times 5^1\times {\mathrm{32429}}^1$

素因数の和:32448

約数の個数: 32

約数和(自身を含む): 49617900

約数和(自身を除く): 28863340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32429, 64858, 129716, 162145, 259432, 324290, 518864, 648580, 1037728, 1297160, 2075456, 2594320, 4150912, 5188640, 10377280, 20754560]

約数ペア:

[(1, 20754560), (2, 10377280), (4, 5188640), (5, 4150912), (8, 2594320), (10, 2075456), (16, 1297160), (20, 1037728), (32, 648580), (40, 518864), (64, 324290), (80, 259432), (128, 162145), (160, 129716), (320, 64858), (640, 32429)]