320487860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{18919}}^1$

素因数の和:18957

約数の個数: 72

約数和(自身を含む): 845496960

約数和(自身を除く): 525009100

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1210, 1540, 1694, 2420, 3388, 4235, 8470, 16940, 18919, 37838, 75676, 94595, 132433, 189190, 208109, 264866, 378380, 416218, 529732, 662165, 832436, 1040545, 1324330, 1456763, 2081090, 2289199, 2648660, 2913526, 4162180, 4578398, 5827052, 7283815, 9156796, 11445995, 14567630, 16024393, 22891990, 29135260, 32048786, 45783980, 64097572, 80121965, 160243930, 320487860]

約数ペア:

[(1, 320487860), (2, 160243930), (4, 80121965), (5, 64097572), (7, 45783980), (10, 32048786), (11, 29135260), (14, 22891990), (20, 16024393), (22, 14567630), (28, 11445995), (35, 9156796), (44, 7283815), (55, 5827052), (70, 4578398), (77, 4162180), (110, 2913526), (121, 2648660), (140, 2289199), (154, 2081090), (220, 1456763), (242, 1324330), (308, 1040545), (385, 832436), (484, 662165), (605, 529732), (770, 416218), (847, 378380), (1210, 264866), (1540, 208109), (1694, 189190), (2420, 132433), (3388, 94595), (4235, 75676), (8470, 37838), (16940, 18919)]