21396945

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{389}}^1$

素因数の和:609

約数の個数: 32

約数和(自身を含む): 36316800

約数和(自身を除く): 14919855

約数列:

[1, 3, 5, 15, 19, 57, 95, 193, 285, 389, 579, 965, 1167, 1945, 2895, 3667, 5835, 7391, 11001, 18335, 22173, 36955, 55005, 75077, 110865, 225231, 375385, 1126155, 1426463, 4279389, 7132315, 21396945]

約数ペア:

[(1, 21396945), (3, 7132315), (5, 4279389), (15, 1426463), (19, 1126155), (57, 375385), (95, 225231), (193, 110865), (285, 75077), (389, 55005), (579, 36955), (965, 22173), (1167, 18335), (1945, 11001), (2895, 7391), (3667, 5835)]