19981500

素因数分解:

$2^2\times 3^1\times 5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1$

素因数の和:213

約数の個数: 192

約数和(自身を含む): 72963072

約数和(自身を除く): 52981572

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 25, 28, 30, 33, 35, 42, 44, 50, 55, 60, 66, 70, 75, 77, 84, 100, 105, 110, 125, 132, 140, 150, 154, 165, 173, 175, 210, 220, 231, 250, 275, 300, 308, 330, 346, 350, 375, 385, 420, 462, 500, 519, 525, 550, 660, 692, 700, 750, 770, 825, 865, 875, 924, 1038, 1050, 1100, 1155, 1211, 1375, 1500, 1540, 1650, 1730, 1750, 1903, 1925, 2076, 2100, 2310, 2422, 2595, 2625, 2750, 3300, 3460, 3500, 3633, 3806, 3850, 4125, 4325, 4620, 4844, 5190, 5250, 5500, 5709, 5775, 6055, 7266, 7612, 7700, 8250, 8650, 9515, 9625, 10380, 10500, 11418, 11550, 12110, 12975, 13321, 14532, 16500, 17300, 18165, 19030, 19250, 21625, 22836, 23100, 24220, 25950, 26642, 28545, 28875, 30275, 36330, 38060, 38500, 39963, 43250, 47575, 51900, 53284, 57090, 57750, 60550, 64875, 66605, 72660, 79926, 86500, 90825, 95150, 114180, 115500, 121100, 129750, 133210, 142725, 151375, 159852, 181650, 190300, 199815, 237875, 259500, 266420, 285450, 302750, 333025, 363300, 399630, 454125, 475750, 570900, 605500, 666050, 713625, 799260, 908250, 951500, 999075, 1332100, 1427250, 1665125, 1816500, 1998150, 2854500, 3330250, 3996300, 4995375, 6660500, 9990750, 19981500]

約数ペア:

[(1, 19981500), (2, 9990750), (3, 6660500), (4, 4995375), (5, 3996300), (6, 3330250), (7, 2854500), (10, 1998150), (11, 1816500), (12, 1665125), (14, 1427250), (15, 1332100), (20, 999075), (21, 951500), (22, 908250), (25, 799260), (28, 713625), (30, 666050), (33, 605500), (35, 570900), (42, 475750), (44, 454125), (50, 399630), (55, 363300), (60, 333025), (66, 302750), (70, 285450), (75, 266420), (77, 259500), (84, 237875), (100, 199815), (105, 190300), (110, 181650), (125, 159852), (132, 151375), (140, 142725), (150, 133210), (154, 129750), (165, 121100), (173, 115500), (175, 114180), (210, 95150), (220, 90825), (231, 86500), (250, 79926), (275, 72660), (300, 66605), (308, 64875), (330, 60550), (346, 57750), (350, 57090), (375, 53284), (385, 51900), (420, 47575), (462, 43250), (500, 39963), (519, 38500), (525, 38060), (550, 36330), (660, 30275), (692, 28875), (700, 28545), (750, 26642), (770, 25950), (825, 24220), (865, 23100), (875, 22836), (924, 21625), (1038, 19250), (1050, 19030), (1100, 18165), (1155, 17300), (1211, 16500), (1375, 14532), (1500, 13321), (1540, 12975), (1650, 12110), (1730, 11550), (1750, 11418), (1903, 10500), (1925, 10380), (2076, 9625), (2100, 9515), (2310, 8650), (2422, 8250), (2595, 7700), (2625, 7612), (2750, 7266), (3300, 6055), (3460, 5775), (3500, 5709), (3633, 5500), (3806, 5250), (3850, 5190), (4125, 4844), (4325, 4620)]