20868135

素因数分解:

$3^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{6991}}^1$

素因数の和:7198

約数の個数: 16

約数和(自身を含む): 33561600

約数和(自身を除く): 12693465

約数列:

[1, 3, 5, 15, 199, 597, 995, 2985, 6991, 20973, 34955, 104865, 1391209, 4173627, 6956045, 20868135]

約数ペア:

[(1, 20868135), (3, 6956045), (5, 4173627), (15, 1391209), (199, 104865), (597, 34955), (995, 20973), (2985, 6991)]