28384575

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{19919}}^1$

素因数の和:19951

約数の個数: 24

約数和(自身を含む): 49401600

約数和(自身を除く): 21017025

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 19919, 59757, 99595, 298785, 378461, 497975, 1135383, 1493925, 1892305, 5676915, 9461525, 28384575]

約数ペア:

[(1, 28384575), (3, 9461525), (5, 5676915), (15, 1892305), (19, 1493925), (25, 1135383), (57, 497975), (75, 378461), (95, 298785), (285, 99595), (475, 59757), (1425, 19919)]