28220675

素因数分解:

$5^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1231}}^1$

素因数の和:1379

約数の個数: 24

約数和(自身を含む): 40330752

約数和(自身を除く): 12110077

約数列:

[1, 5, 7, 25, 35, 131, 175, 655, 917, 1231, 3275, 4585, 6155, 8617, 22925, 30775, 43085, 161261, 215425, 806305, 1128827, 4031525, 5644135, 28220675]

約数ペア:

[(1, 28220675), (5, 5644135), (7, 4031525), (25, 1128827), (35, 806305), (131, 215425), (175, 161261), (655, 43085), (917, 30775), (1231, 22925), (3275, 8617), (4585, 6155)]