638403942

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1\times {\mathrm{433}}^1$

素因数の和:789

約数の個数: 64

約数和(自身を含む): 1417409280

約数和(自身を除く): 779005338

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 89, 178, 251, 267, 433, 502, 534, 753, 866, 979, 1299, 1506, 1958, 2598, 2761, 2937, 4763, 5522, 5874, 8283, 9526, 14289, 16566, 22339, 28578, 38537, 44678, 67017, 77074, 108683, 115611, 134034, 217366, 231222, 245729, 326049, 423907, 491458, 652098, 737187, 847814, 1195513, 1271721, 1474374, 2391026, 2543442, 3586539, 7173078, 9672787, 19345574, 29018361, 58036722, 106400657, 212801314, 319201971, 638403942]

約数ペア:

[(1, 638403942), (2, 319201971), (3, 212801314), (6, 106400657), (11, 58036722), (22, 29018361), (33, 19345574), (66, 9672787), (89, 7173078), (178, 3586539), (251, 2543442), (267, 2391026), (433, 1474374), (502, 1271721), (534, 1195513), (753, 847814), (866, 737187), (979, 652098), (1299, 491458), (1506, 423907), (1958, 326049), (2598, 245729), (2761, 231222), (2937, 217366), (4763, 134034), (5522, 115611), (5874, 108683), (8283, 77074), (9526, 67017), (14289, 44678), (16566, 38537), (22339, 28578)]