20030725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{431}}^1$

素因数の和:478

約数の個数: 36

約数和(自身を含む): 29408832

約数和(自身を除く): 9378107

約数列:

[1, 5, 11, 13, 25, 55, 65, 143, 169, 275, 325, 431, 715, 845, 1859, 2155, 3575, 4225, 4741, 5603, 9295, 10775, 23705, 28015, 46475, 61633, 72839, 118525, 140075, 308165, 364195, 801229, 1540825, 1820975, 4006145, 20030725]

約数ペア:

[(1, 20030725), (5, 4006145), (11, 1820975), (13, 1540825), (25, 801229), (55, 364195), (65, 308165), (143, 140075), (169, 118525), (275, 72839), (325, 61633), (431, 46475), (715, 28015), (845, 23705), (1859, 10775), (2155, 9295), (3575, 5603), (4225, 4741)]