20974725

素因数分解:

$3^2\times 5^2\times {\mathrm{73}}^1\times {\mathrm{1277}}^1$

素因数の和:1366

約数の個数: 36

約数和(自身を含む): 38112516

約数和(自身を除く): 17137791

約数列:

[1, 3, 5, 9, 15, 25, 45, 73, 75, 219, 225, 365, 657, 1095, 1277, 1825, 3285, 3831, 5475, 6385, 11493, 16425, 19155, 31925, 57465, 93221, 95775, 279663, 287325, 466105, 838989, 1398315, 2330525, 4194945, 6991575, 20974725]

約数ペア:

[(1, 20974725), (3, 6991575), (5, 4194945), (9, 2330525), (15, 1398315), (25, 838989), (45, 466105), (73, 287325), (75, 279663), (219, 95775), (225, 93221), (365, 57465), (657, 31925), (1095, 19155), (1277, 16425), (1825, 11493), (3285, 6385), (3831, 5475)]