21488760

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{197}}^1$

素因数の和:318

約数の個数: 128

約数和(自身を含む): 72705600

約数和(自身を除く): 51216840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 101, 108, 120, 135, 180, 197, 202, 216, 270, 303, 360, 394, 404, 505, 540, 591, 606, 788, 808, 909, 985, 1010, 1080, 1182, 1212, 1515, 1576, 1773, 1818, 1970, 2020, 2364, 2424, 2727, 2955, 3030, 3546, 3636, 3940, 4040, 4545, 4728, 5319, 5454, 5910, 6060, 7092, 7272, 7880, 8865, 9090, 10638, 10908, 11820, 12120, 13635, 14184, 17730, 18180, 19897, 21276, 21816, 23640, 26595, 27270, 35460, 36360, 39794, 42552, 53190, 54540, 59691, 70920, 79588, 99485, 106380, 109080, 119382, 159176, 179073, 198970, 212760, 238764, 298455, 358146, 397940, 477528, 537219, 596910, 716292, 795880, 895365, 1074438, 1193820, 1432584, 1790730, 2148876, 2387640, 2686095, 3581460, 4297752, 5372190, 7162920, 10744380, 21488760]

約数ペア:

[(1, 21488760), (2, 10744380), (3, 7162920), (4, 5372190), (5, 4297752), (6, 3581460), (8, 2686095), (9, 2387640), (10, 2148876), (12, 1790730), (15, 1432584), (18, 1193820), (20, 1074438), (24, 895365), (27, 795880), (30, 716292), (36, 596910), (40, 537219), (45, 477528), (54, 397940), (60, 358146), (72, 298455), (90, 238764), (101, 212760), (108, 198970), (120, 179073), (135, 159176), (180, 119382), (197, 109080), (202, 106380), (216, 99485), (270, 79588), (303, 70920), (360, 59691), (394, 54540), (404, 53190), (505, 42552), (540, 39794), (591, 36360), (606, 35460), (788, 27270), (808, 26595), (909, 23640), (985, 21816), (1010, 21276), (1080, 19897), (1182, 18180), (1212, 17730), (1515, 14184), (1576, 13635), (1773, 12120), (1818, 11820), (1970, 10908), (2020, 10638), (2364, 9090), (2424, 8865), (2727, 7880), (2955, 7272), (3030, 7092), (3546, 6060), (3636, 5910), (3940, 5454), (4040, 5319), (4545, 4728)]