40438480

素因数分解:

$2^4\times 5^1\times {\mathrm{505481}}^1$

素因数の和:505494

約数の個数: 20

約数和(自身を含む): 94019652

約数和(自身を除く): 53581172

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 505481, 1010962, 2021924, 2527405, 4043848, 5054810, 8087696, 10109620, 20219240, 40438480]

約数ペア:

[(1, 40438480), (2, 20219240), (4, 10109620), (5, 8087696), (8, 5054810), (10, 4043848), (16, 2527405), (20, 2021924), (40, 1010962), (80, 505481)]