19887000

素因数分解:

$2^3\times 3^1\times 5^3\times 7^1\times {\mathrm{947}}^1$

素因数の和:978

約数の個数: 128

約数和(自身を含む): 70986240

約数和(自身を除く): 51099240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 25, 28, 30, 35, 40, 42, 50, 56, 60, 70, 75, 84, 100, 105, 120, 125, 140, 150, 168, 175, 200, 210, 250, 280, 300, 350, 375, 420, 500, 525, 600, 700, 750, 840, 875, 947, 1000, 1050, 1400, 1500, 1750, 1894, 2100, 2625, 2841, 3000, 3500, 3788, 4200, 4735, 5250, 5682, 6629, 7000, 7576, 9470, 10500, 11364, 13258, 14205, 18940, 19887, 21000, 22728, 23675, 26516, 28410, 33145, 37880, 39774, 47350, 53032, 56820, 66290, 71025, 79548, 94700, 99435, 113640, 118375, 132580, 142050, 159096, 165725, 189400, 198870, 236750, 265160, 284100, 331450, 355125, 397740, 473500, 497175, 568200, 662900, 710250, 795480, 828625, 947000, 994350, 1325800, 1420500, 1657250, 1988700, 2485875, 2841000, 3314500, 3977400, 4971750, 6629000, 9943500, 19887000]

約数ペア:

[(1, 19887000), (2, 9943500), (3, 6629000), (4, 4971750), (5, 3977400), (6, 3314500), (7, 2841000), (8, 2485875), (10, 1988700), (12, 1657250), (14, 1420500), (15, 1325800), (20, 994350), (21, 947000), (24, 828625), (25, 795480), (28, 710250), (30, 662900), (35, 568200), (40, 497175), (42, 473500), (50, 397740), (56, 355125), (60, 331450), (70, 284100), (75, 265160), (84, 236750), (100, 198870), (105, 189400), (120, 165725), (125, 159096), (140, 142050), (150, 132580), (168, 118375), (175, 113640), (200, 99435), (210, 94700), (250, 79548), (280, 71025), (300, 66290), (350, 56820), (375, 53032), (420, 47350), (500, 39774), (525, 37880), (600, 33145), (700, 28410), (750, 26516), (840, 23675), (875, 22728), (947, 21000), (1000, 19887), (1050, 18940), (1400, 14205), (1500, 13258), (1750, 11364), (1894, 10500), (2100, 9470), (2625, 7576), (2841, 7000), (3000, 6629), (3500, 5682), (3788, 5250), (4200, 4735)]