21252830

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{111857}}^1$

素因数の和:111883

約数の個数: 16

約数和(自身を含む): 40268880

約数和(自身を除く): 19016050

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 111857, 223714, 559285, 1118570, 2125283, 4250566, 10626415, 21252830]

約数ペア:

[(1, 21252830), (2, 10626415), (5, 4250566), (10, 2125283), (19, 1118570), (38, 559285), (95, 223714), (190, 111857)]