20105775

素因数分解:

$3^2\times 5^2\times {\mathrm{193}}^1\times {\mathrm{463}}^1$

素因数の和:672

約数の個数: 36

約数和(自身を含む): 36276448

約数和(自身を除く): 16170673

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 193, 225, 463, 579, 965, 1389, 1737, 2315, 2895, 4167, 4825, 6945, 8685, 11575, 14475, 20835, 34725, 43425, 89359, 104175, 268077, 446795, 804231, 1340385, 2233975, 4021155, 6701925, 20105775]

約数ペア:

[(1, 20105775), (3, 6701925), (5, 4021155), (9, 2233975), (15, 1340385), (25, 804231), (45, 446795), (75, 268077), (193, 104175), (225, 89359), (463, 43425), (579, 34725), (965, 20835), (1389, 14475), (1737, 11575), (2315, 8685), (2895, 6945), (4167, 4825)]