21203028

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7649}}^1$

素因数の和:7677

約数の個数: 72

約数和(自身を含む): 66830400

約数和(自身を除く): 45627372

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 63, 66, 77, 84, 99, 126, 132, 154, 198, 231, 252, 308, 396, 462, 693, 924, 1386, 2772, 7649, 15298, 22947, 30596, 45894, 53543, 68841, 84139, 91788, 107086, 137682, 160629, 168278, 214172, 252417, 275364, 321258, 336556, 481887, 504834, 588973, 642516, 757251, 963774, 1009668, 1177946, 1514502, 1766919, 1927548, 2355892, 3029004, 3533838, 5300757, 7067676, 10601514, 21203028]

約数ペア:

[(1, 21203028), (2, 10601514), (3, 7067676), (4, 5300757), (6, 3533838), (7, 3029004), (9, 2355892), (11, 1927548), (12, 1766919), (14, 1514502), (18, 1177946), (21, 1009668), (22, 963774), (28, 757251), (33, 642516), (36, 588973), (42, 504834), (44, 481887), (63, 336556), (66, 321258), (77, 275364), (84, 252417), (99, 214172), (126, 168278), (132, 160629), (154, 137682), (198, 107086), (231, 91788), (252, 84139), (308, 68841), (396, 53543), (462, 45894), (693, 30596), (924, 22947), (1386, 15298), (2772, 7649)]