21772280

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{313}}^1$

素因数の和:408

約数の個数: 64

約数和(自身を含む): 51546240

約数和(自身を除く): 29773960

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 47, 74, 94, 148, 185, 188, 235, 296, 313, 370, 376, 470, 626, 740, 940, 1252, 1480, 1565, 1739, 1880, 2504, 3130, 3478, 6260, 6956, 8695, 11581, 12520, 13912, 14711, 17390, 23162, 29422, 34780, 46324, 57905, 58844, 69560, 73555, 92648, 115810, 117688, 147110, 231620, 294220, 463240, 544307, 588440, 1088614, 2177228, 2721535, 4354456, 5443070, 10886140, 21772280]

約数ペア:

[(1, 21772280), (2, 10886140), (4, 5443070), (5, 4354456), (8, 2721535), (10, 2177228), (20, 1088614), (37, 588440), (40, 544307), (47, 463240), (74, 294220), (94, 231620), (148, 147110), (185, 117688), (188, 115810), (235, 92648), (296, 73555), (313, 69560), (370, 58844), (376, 57905), (470, 46324), (626, 34780), (740, 29422), (940, 23162), (1252, 17390), (1480, 14711), (1565, 13912), (1739, 12520), (1880, 11581), (2504, 8695), (3130, 6956), (3478, 6260)]