256052420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{984817}}^1$

素因数の和:984839

約数の個数: 24

約数和(自身を含む): 579072984

約数和(自身を除く): 323020564

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 984817, 1969634, 3939268, 4924085, 9848170, 12802621, 19696340, 25605242, 51210484, 64013105, 128026210, 256052420]

約数ペア:

[(1, 256052420), (2, 128026210), (4, 64013105), (5, 51210484), (10, 25605242), (13, 19696340), (20, 12802621), (26, 9848170), (52, 4924085), (65, 3939268), (130, 1969634), (260, 984817)]