20209580

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4789}}^1$

素因数の和:5009

約数の個数: 24

約数和(自身を含む): 42650160

約数和(自身を除く): 22440580

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 4789, 9578, 19156, 23945, 47890, 95780, 1010479, 2020958, 4041916, 5052395, 10104790, 20209580]

約数ペア:

[(1, 20209580), (2, 10104790), (4, 5052395), (5, 4041916), (10, 2020958), (20, 1010479), (211, 95780), (422, 47890), (844, 23945), (1055, 19156), (2110, 9578), (4220, 4789)]