18729900

素因数分解:

$2^2\times 3^3\times 5^2\times 7^1\times {\mathrm{991}}^1$

素因数の和:1021

約数の個数: 144

約数和(自身を含む): 68884480

約数和(自身を除く): 50154580

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 27, 28, 30, 35, 36, 42, 45, 50, 54, 60, 63, 70, 75, 84, 90, 100, 105, 108, 126, 135, 140, 150, 175, 180, 189, 210, 225, 252, 270, 300, 315, 350, 378, 420, 450, 525, 540, 630, 675, 700, 756, 900, 945, 991, 1050, 1260, 1350, 1575, 1890, 1982, 2100, 2700, 2973, 3150, 3780, 3964, 4725, 4955, 5946, 6300, 6937, 8919, 9450, 9910, 11892, 13874, 14865, 17838, 18900, 19820, 20811, 24775, 26757, 27748, 29730, 34685, 35676, 41622, 44595, 49550, 53514, 59460, 62433, 69370, 74325, 83244, 89190, 99100, 104055, 107028, 124866, 133785, 138740, 148650, 173425, 178380, 187299, 208110, 222975, 249732, 267570, 297300, 312165, 346850, 374598, 416220, 445950, 520275, 535140, 624330, 668925, 693700, 749196, 891900, 936495, 1040550, 1248660, 1337850, 1560825, 1872990, 2081100, 2675700, 3121650, 3745980, 4682475, 6243300, 9364950, 18729900]

約数ペア:

[(1, 18729900), (2, 9364950), (3, 6243300), (4, 4682475), (5, 3745980), (6, 3121650), (7, 2675700), (9, 2081100), (10, 1872990), (12, 1560825), (14, 1337850), (15, 1248660), (18, 1040550), (20, 936495), (21, 891900), (25, 749196), (27, 693700), (28, 668925), (30, 624330), (35, 535140), (36, 520275), (42, 445950), (45, 416220), (50, 374598), (54, 346850), (60, 312165), (63, 297300), (70, 267570), (75, 249732), (84, 222975), (90, 208110), (100, 187299), (105, 178380), (108, 173425), (126, 148650), (135, 138740), (140, 133785), (150, 124866), (175, 107028), (180, 104055), (189, 99100), (210, 89190), (225, 83244), (252, 74325), (270, 69370), (300, 62433), (315, 59460), (350, 53514), (378, 49550), (420, 44595), (450, 41622), (525, 35676), (540, 34685), (630, 29730), (675, 27748), (700, 26757), (756, 24775), (900, 20811), (945, 19820), (991, 18900), (1050, 17838), (1260, 14865), (1350, 13874), (1575, 11892), (1890, 9910), (1982, 9450), (2100, 8919), (2700, 6937), (2973, 6300), (3150, 5946), (3780, 4955), (3964, 4725)]