28891746

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:176

約数の個数: 96

約数和(自身を含む): 71705088

約数和(自身を除く): 42813342

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 37, 39, 47, 71, 74, 78, 94, 111, 117, 141, 142, 213, 222, 234, 282, 333, 423, 426, 481, 611, 639, 666, 846, 923, 962, 1222, 1278, 1443, 1739, 1833, 1846, 2627, 2769, 2886, 3337, 3478, 3666, 4329, 5217, 5254, 5499, 5538, 6674, 7881, 8307, 8658, 10011, 10434, 10998, 15651, 15762, 16614, 20022, 22607, 23643, 30033, 31302, 34151, 43381, 45214, 47286, 60066, 67821, 68302, 86762, 102453, 123469, 130143, 135642, 203463, 204906, 246938, 260286, 307359, 370407, 390429, 406926, 614718, 740814, 780858, 1111221, 1605097, 2222442, 3210194, 4815291, 9630582, 14445873, 28891746]

約数ペア:

[(1, 28891746), (2, 14445873), (3, 9630582), (6, 4815291), (9, 3210194), (13, 2222442), (18, 1605097), (26, 1111221), (37, 780858), (39, 740814), (47, 614718), (71, 406926), (74, 390429), (78, 370407), (94, 307359), (111, 260286), (117, 246938), (141, 204906), (142, 203463), (213, 135642), (222, 130143), (234, 123469), (282, 102453), (333, 86762), (423, 68302), (426, 67821), (481, 60066), (611, 47286), (639, 45214), (666, 43381), (846, 34151), (923, 31302), (962, 30033), (1222, 23643), (1278, 22607), (1443, 20022), (1739, 16614), (1833, 15762), (1846, 15651), (2627, 10998), (2769, 10434), (2886, 10011), (3337, 8658), (3478, 8307), (3666, 7881), (4329, 6674), (5217, 5538), (5254, 5499)]