21216141

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{41357}}^1$

素因数の和:41385

約数の個数: 16

約数和(自身を含む): 33086400

約数和(自身を除く): 11870259

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 41357, 124071, 372213, 785783, 1116639, 2357349, 7072047, 21216141]

約数ペア:

[(1, 21216141), (3, 7072047), (9, 2357349), (19, 1116639), (27, 785783), (57, 372213), (171, 124071), (513, 41357)]