27980875

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{257}}^1$

素因数の和:352

約数の個数: 32

約数和(自身を含む): 38316096

約数和(自身を除く): 10335221

約数列:

[1, 5, 13, 25, 65, 67, 125, 257, 325, 335, 871, 1285, 1625, 1675, 3341, 4355, 6425, 8375, 16705, 17219, 21775, 32125, 83525, 86095, 108875, 223847, 417625, 430475, 1119235, 2152375, 5596175, 27980875]

約数ペア:

[(1, 27980875), (5, 5596175), (13, 2152375), (25, 1119235), (65, 430475), (67, 417625), (125, 223847), (257, 108875), (325, 86095), (335, 83525), (871, 32125), (1285, 21775), (1625, 17219), (1675, 16705), (3341, 8375), (4355, 6425)]