128611980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{991}}^1$

素因数の和:1116

約数の個数: 144

約数和(自身を含む): 450637824

約数和(自身を除く): 322025844

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 103, 105, 126, 140, 180, 206, 210, 252, 309, 315, 412, 420, 515, 618, 630, 721, 927, 991, 1030, 1236, 1260, 1442, 1545, 1854, 1982, 2060, 2163, 2884, 2973, 3090, 3605, 3708, 3964, 4326, 4635, 4955, 5946, 6180, 6489, 6937, 7210, 8652, 8919, 9270, 9910, 10815, 11892, 12978, 13874, 14420, 14865, 17838, 18540, 19820, 20811, 21630, 25956, 27748, 29730, 32445, 34685, 35676, 41622, 43260, 44595, 59460, 62433, 64890, 69370, 83244, 89190, 102073, 104055, 124866, 129780, 138740, 178380, 204146, 208110, 249732, 306219, 312165, 408292, 416220, 510365, 612438, 624330, 714511, 918657, 1020730, 1224876, 1248660, 1429022, 1531095, 1837314, 2041460, 2143533, 2858044, 3062190, 3572555, 3674628, 4287066, 4593285, 6124380, 6430599, 7145110, 8574132, 9186570, 10717665, 12861198, 14290220, 18373140, 21435330, 25722396, 32152995, 42870660, 64305990, 128611980]

約数ペア:

[(1, 128611980), (2, 64305990), (3, 42870660), (4, 32152995), (5, 25722396), (6, 21435330), (7, 18373140), (9, 14290220), (10, 12861198), (12, 10717665), (14, 9186570), (15, 8574132), (18, 7145110), (20, 6430599), (21, 6124380), (28, 4593285), (30, 4287066), (35, 3674628), (36, 3572555), (42, 3062190), (45, 2858044), (60, 2143533), (63, 2041460), (70, 1837314), (84, 1531095), (90, 1429022), (103, 1248660), (105, 1224876), (126, 1020730), (140, 918657), (180, 714511), (206, 624330), (210, 612438), (252, 510365), (309, 416220), (315, 408292), (412, 312165), (420, 306219), (515, 249732), (618, 208110), (630, 204146), (721, 178380), (927, 138740), (991, 129780), (1030, 124866), (1236, 104055), (1260, 102073), (1442, 89190), (1545, 83244), (1854, 69370), (1982, 64890), (2060, 62433), (2163, 59460), (2884, 44595), (2973, 43260), (3090, 41622), (3605, 35676), (3708, 34685), (3964, 32445), (4326, 29730), (4635, 27748), (4955, 25956), (5946, 21630), (6180, 20811), (6489, 19820), (6937, 18540), (7210, 17838), (8652, 14865), (8919, 14420), (9270, 13874), (9910, 12978), (10815, 11892)]