20659000

素因数分解:

$2^3\times 5^3\times {\mathrm{73}}^1\times {\mathrm{283}}^1$

素因数の和:377

約数の個数: 64

約数和(自身を含む): 49177440

約数和(自身を除く): 28518440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 73, 100, 125, 146, 200, 250, 283, 292, 365, 500, 566, 584, 730, 1000, 1132, 1415, 1460, 1825, 2264, 2830, 2920, 3650, 5660, 7075, 7300, 9125, 11320, 14150, 14600, 18250, 20659, 28300, 35375, 36500, 41318, 56600, 70750, 73000, 82636, 103295, 141500, 165272, 206590, 283000, 413180, 516475, 826360, 1032950, 2065900, 2582375, 4131800, 5164750, 10329500, 20659000]

約数ペア:

[(1, 20659000), (2, 10329500), (4, 5164750), (5, 4131800), (8, 2582375), (10, 2065900), (20, 1032950), (25, 826360), (40, 516475), (50, 413180), (73, 283000), (100, 206590), (125, 165272), (146, 141500), (200, 103295), (250, 82636), (283, 73000), (292, 70750), (365, 56600), (500, 41318), (566, 36500), (584, 35375), (730, 28300), (1000, 20659), (1132, 18250), (1415, 14600), (1460, 14150), (1825, 11320), (2264, 9125), (2830, 7300), (2920, 7075), (3650, 5660)]