19690000

素因数分解:

$2^4\times 5^4\times {\mathrm{11}}^1\times {\mathrm{179}}^1$

素因数の和:218

約数の個数: 100

約数和(自身を含む): 52295760

約数和(自身を除く): 32605760

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 125, 176, 179, 200, 220, 250, 275, 358, 400, 440, 500, 550, 625, 716, 880, 895, 1000, 1100, 1250, 1375, 1432, 1790, 1969, 2000, 2200, 2500, 2750, 2864, 3580, 3938, 4400, 4475, 5000, 5500, 6875, 7160, 7876, 8950, 9845, 10000, 11000, 13750, 14320, 15752, 17900, 19690, 22000, 22375, 27500, 31504, 35800, 39380, 44750, 49225, 55000, 71600, 78760, 89500, 98450, 110000, 111875, 157520, 179000, 196900, 223750, 246125, 358000, 393800, 447500, 492250, 787600, 895000, 984500, 1230625, 1790000, 1969000, 2461250, 3938000, 4922500, 9845000, 19690000]

約数ペア:

[(1, 19690000), (2, 9845000), (4, 4922500), (5, 3938000), (8, 2461250), (10, 1969000), (11, 1790000), (16, 1230625), (20, 984500), (22, 895000), (25, 787600), (40, 492250), (44, 447500), (50, 393800), (55, 358000), (80, 246125), (88, 223750), (100, 196900), (110, 179000), (125, 157520), (176, 111875), (179, 110000), (200, 98450), (220, 89500), (250, 78760), (275, 71600), (358, 55000), (400, 49225), (440, 44750), (500, 39380), (550, 35800), (625, 31504), (716, 27500), (880, 22375), (895, 22000), (1000, 19690), (1100, 17900), (1250, 15752), (1375, 14320), (1432, 13750), (1790, 11000), (1969, 10000), (2000, 9845), (2200, 8950), (2500, 7876), (2750, 7160), (2864, 6875), (3580, 5500), (3938, 5000), (4400, 4475)]