21250780

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9403}}^1$

素因数の和:9525

約数の個数: 24

約数和(自身を含む): 45026352

約数和(自身を除く): 23775572

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9403, 18806, 37612, 47015, 94030, 188060, 1062539, 2125078, 4250156, 5312695, 10625390, 21250780]

約数ペア:

[(1, 21250780), (2, 10625390), (4, 5312695), (5, 4250156), (10, 2125078), (20, 1062539), (113, 188060), (226, 94030), (452, 47015), (565, 37612), (1130, 18806), (2260, 9403)]