26880028

素因数分解:

$2^2\times 7^2\times {\mathrm{137143}}^1$

素因数の和:137161

約数の個数: 18

約数和(自身を含む): 54720456

約数和(自身を除く): 27840428

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 137143, 274286, 548572, 960001, 1920002, 3840004, 6720007, 13440014, 26880028]

約数ペア:

[(1, 26880028), (2, 13440014), (4, 6720007), (7, 3840004), (14, 1920002), (28, 960001), (49, 548572), (98, 274286), (196, 137143)]