20544050

素因数分解:

$2^1\times 5^2\times {\mathrm{641}}^2$

素因数の和:1294

約数の個数: 18

約数和(自身を含む): 38271639

約数和(自身を除く): 17727589

約数列:

[1, 2, 5, 10, 25, 50, 641, 1282, 3205, 6410, 16025, 32050, 410881, 821762, 2054405, 4108810, 10272025, 20544050]

約数ペア:

[(1, 20544050), (2, 10272025), (5, 4108810), (10, 2054405), (25, 821762), (50, 410881), (641, 32050), (1282, 16025), (3205, 6410)]