21123219

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{4969}}^1$

素因数の和:5094

約数の個数: 16

約数和(自身を含む): 30615200

約数和(自身を除く): 9491981

約数列:

[1, 3, 13, 39, 109, 327, 1417, 4251, 4969, 14907, 64597, 193791, 541621, 1624863, 7041073, 21123219]

約数ペア:

[(1, 21123219), (3, 7041073), (13, 1624863), (39, 541621), (109, 193791), (327, 64597), (1417, 14907), (4251, 4969)]