20540500

素因数分解:

$2^2\times 5^3\times {\mathrm{41081}}^1$

素因数の和:41100

約数の個数: 24

約数和(自身を含む): 44861544

約数和(自身を除く): 24321044

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 41081, 82162, 164324, 205405, 410810, 821620, 1027025, 2054050, 4108100, 5135125, 10270250, 20540500]

約数ペア:

[(1, 20540500), (2, 10270250), (4, 5135125), (5, 4108100), (10, 2054050), (20, 1027025), (25, 821620), (50, 410810), (100, 205405), (125, 164324), (250, 82162), (500, 41081)]