21421455

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6833}}^1$

素因数の和:6871

約数の個数: 32

約数和(自身を含む): 39363840

約数和(自身を除く): 17942385

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 165, 209, 285, 627, 1045, 3135, 6833, 20499, 34165, 75163, 102495, 129827, 225489, 375815, 389481, 649135, 1127445, 1428097, 1947405, 4284291, 7140485, 21421455]

約数ペア:

[(1, 21421455), (3, 7140485), (5, 4284291), (11, 1947405), (15, 1428097), (19, 1127445), (33, 649135), (55, 389481), (57, 375815), (95, 225489), (165, 129827), (209, 102495), (285, 75163), (627, 34165), (1045, 20499), (3135, 6833)]