19997750

素因数分解:

$2^1\times 5^3\times {\mathrm{41}}^1\times {\mathrm{1951}}^1$

素因数の和:2009

約数の個数: 32

約数和(自身を含む): 38368512

約数和(自身を除く): 18370762

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 125, 205, 250, 410, 1025, 1951, 2050, 3902, 5125, 9755, 10250, 19510, 48775, 79991, 97550, 159982, 243875, 399955, 487750, 799910, 1999775, 3999550, 9998875, 19997750]

約数ペア:

[(1, 19997750), (2, 9998875), (5, 3999550), (10, 1999775), (25, 799910), (41, 487750), (50, 399955), (82, 243875), (125, 159982), (205, 97550), (250, 79991), (410, 48775), (1025, 19510), (1951, 10250), (2050, 9755), (3902, 5125)]