21065718

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{4507}}^1$

素因数の和:4572

約数の個数: 32

約数和(自身を含む): 45440640

約数和(自身を除く): 24374922

約数列:

[1, 2, 3, 6, 19, 38, 41, 57, 82, 114, 123, 246, 779, 1558, 2337, 4507, 4674, 9014, 13521, 27042, 85633, 171266, 184787, 256899, 369574, 513798, 554361, 1108722, 3510953, 7021906, 10532859, 21065718]

約数ペア:

[(1, 21065718), (2, 10532859), (3, 7021906), (6, 3510953), (19, 1108722), (38, 554361), (41, 513798), (57, 369574), (82, 256899), (114, 184787), (123, 171266), (246, 85633), (779, 27042), (1558, 13521), (2337, 9014), (4507, 4674)]