28997072

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{139409}}^1$

素因数の和:139430

約数の個数: 20

約数和(自身を含む): 60503940

約数和(自身を除く): 31506868

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 139409, 278818, 557636, 1115272, 1812317, 2230544, 3624634, 7249268, 14498536, 28997072]

約数ペア:

[(1, 28997072), (2, 14498536), (4, 7249268), (8, 3624634), (13, 2230544), (16, 1812317), (26, 1115272), (52, 557636), (104, 278818), (208, 139409)]