21016090

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2087}}^1$

素因数の和:2166

約数の個数: 32

約数和(自身を含む): 40590720

約数和(自身を除く): 19574630

約数列:

[1, 2, 5, 10, 19, 38, 53, 95, 106, 190, 265, 530, 1007, 2014, 2087, 4174, 5035, 10070, 10435, 20870, 39653, 79306, 110611, 198265, 221222, 396530, 553055, 1106110, 2101609, 4203218, 10508045, 21016090]

約数ペア:

[(1, 21016090), (2, 10508045), (5, 4203218), (10, 2101609), (19, 1106110), (38, 553055), (53, 396530), (95, 221222), (106, 198265), (190, 110611), (265, 79306), (530, 39653), (1007, 20870), (2014, 10435), (2087, 10070), (4174, 5035)]