20928500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{2203}}^1$

素因数の和:2241

約数の個数: 48

約数和(自身を含む): 48135360

約数和(自身を除く): 27206860

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 475, 500, 950, 1900, 2203, 2375, 4406, 4750, 8812, 9500, 11015, 22030, 41857, 44060, 55075, 83714, 110150, 167428, 209285, 220300, 275375, 418570, 550750, 837140, 1046425, 1101500, 2092850, 4185700, 5232125, 10464250, 20928500]

約数ペア:

[(1, 20928500), (2, 10464250), (4, 5232125), (5, 4185700), (10, 2092850), (19, 1101500), (20, 1046425), (25, 837140), (38, 550750), (50, 418570), (76, 275375), (95, 220300), (100, 209285), (125, 167428), (190, 110150), (250, 83714), (380, 55075), (475, 44060), (500, 41857), (950, 22030), (1900, 11015), (2203, 9500), (2375, 8812), (4406, 4750)]