28127745

素因数分解:

$3^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1997}}^1$

素因数の和:2321

約数の個数: 24

約数和(自身を含む): 48935016

約数和(自身を除く): 20807271

約数列:

[1, 3, 5, 9, 15, 45, 313, 939, 1565, 1997, 2817, 4695, 5991, 9985, 14085, 17973, 29955, 89865, 625061, 1875183, 3125305, 5625549, 9375915, 28127745]

約数ペア:

[(1, 28127745), (3, 9375915), (5, 5625549), (9, 3125305), (15, 1875183), (45, 625061), (313, 89865), (939, 29955), (1565, 17973), (1997, 14085), (2817, 9985), (4695, 5991)]