21553353

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{523}}^1$

素因数の和:789

約数の個数: 24

約数和(自身を含む): 32970080

約数和(自身を除く): 11416727

約数列:

[1, 3, 9, 19, 57, 171, 241, 523, 723, 1569, 2169, 4579, 4707, 9937, 13737, 29811, 41211, 89433, 126043, 378129, 1134387, 2394817, 7184451, 21553353]

約数ペア:

[(1, 21553353), (3, 7184451), (9, 2394817), (19, 1134387), (57, 378129), (171, 126043), (241, 89433), (523, 41211), (723, 29811), (1569, 13737), (2169, 9937), (4579, 4707)]