20681500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1$

素因数の和:356

約数の個数: 96

約数和(自身を含む): 54512640

約数和(自身を除く): 33831140

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 25, 28, 35, 38, 50, 70, 76, 95, 100, 125, 133, 140, 175, 190, 250, 266, 311, 350, 380, 475, 500, 532, 622, 665, 700, 875, 950, 1244, 1330, 1555, 1750, 1900, 2177, 2375, 2660, 3110, 3325, 3500, 4354, 4750, 5909, 6220, 6650, 7775, 8708, 9500, 10885, 11818, 13300, 15550, 16625, 21770, 23636, 29545, 31100, 33250, 38875, 41363, 43540, 54425, 59090, 66500, 77750, 82726, 108850, 118180, 147725, 155500, 165452, 206815, 217700, 272125, 295450, 413630, 544250, 590900, 738625, 827260, 1034075, 1088500, 1477250, 2068150, 2954500, 4136300, 5170375, 10340750, 20681500]

約数ペア:

[(1, 20681500), (2, 10340750), (4, 5170375), (5, 4136300), (7, 2954500), (10, 2068150), (14, 1477250), (19, 1088500), (20, 1034075), (25, 827260), (28, 738625), (35, 590900), (38, 544250), (50, 413630), (70, 295450), (76, 272125), (95, 217700), (100, 206815), (125, 165452), (133, 155500), (140, 147725), (175, 118180), (190, 108850), (250, 82726), (266, 77750), (311, 66500), (350, 59090), (380, 54425), (475, 43540), (500, 41363), (532, 38875), (622, 33250), (665, 31100), (700, 29545), (875, 23636), (950, 21770), (1244, 16625), (1330, 15550), (1555, 13300), (1750, 11818), (1900, 10885), (2177, 9500), (2375, 8708), (2660, 7775), (3110, 6650), (3325, 6220), (3500, 5909), (4354, 4750)]