208319220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{2749}}^1$

素因数の和:3185

約数の個数: 72

約数和(自身を含む): 633633000

約数和(自身を除く): 425313780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 421, 842, 1263, 1684, 2105, 2526, 2749, 3789, 4210, 5052, 5498, 6315, 7578, 8247, 8420, 10996, 12630, 13745, 15156, 16494, 18945, 24741, 25260, 27490, 32988, 37890, 41235, 49482, 54980, 75780, 82470, 98964, 123705, 164940, 247410, 494820, 1157329, 2314658, 3471987, 4629316, 5786645, 6943974, 10415961, 11573290, 13887948, 17359935, 20831922, 23146580, 34719870, 41663844, 52079805, 69439740, 104159610, 208319220]

約数ペア:

[(1, 208319220), (2, 104159610), (3, 69439740), (4, 52079805), (5, 41663844), (6, 34719870), (9, 23146580), (10, 20831922), (12, 17359935), (15, 13887948), (18, 11573290), (20, 10415961), (30, 6943974), (36, 5786645), (45, 4629316), (60, 3471987), (90, 2314658), (180, 1157329), (421, 494820), (842, 247410), (1263, 164940), (1684, 123705), (2105, 98964), (2526, 82470), (2749, 75780), (3789, 54980), (4210, 49482), (5052, 41235), (5498, 37890), (6315, 32988), (7578, 27490), (8247, 25260), (8420, 24741), (10996, 18945), (12630, 16494), (13745, 15156)]