17981838

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:279

約数の個数: 80

約数和(自身を含む): 46800864

約数和(自身を除く): 28819026

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 101, 126, 157, 162, 189, 202, 303, 314, 378, 471, 567, 606, 707, 909, 942, 1099, 1134, 1413, 1414, 1818, 2121, 2198, 2727, 2826, 3297, 4239, 4242, 5454, 6363, 6594, 8181, 8478, 9891, 12717, 12726, 15857, 16362, 19089, 19782, 25434, 29673, 31714, 38178, 47571, 57267, 59346, 89019, 95142, 110999, 114534, 142713, 178038, 221998, 285426, 332997, 428139, 665994, 856278, 998991, 1284417, 1997982, 2568834, 2996973, 5993946, 8990919, 17981838]

約数ペア:

[(1, 17981838), (2, 8990919), (3, 5993946), (6, 2996973), (7, 2568834), (9, 1997982), (14, 1284417), (18, 998991), (21, 856278), (27, 665994), (42, 428139), (54, 332997), (63, 285426), (81, 221998), (101, 178038), (126, 142713), (157, 114534), (162, 110999), (189, 95142), (202, 89019), (303, 59346), (314, 57267), (378, 47571), (471, 38178), (567, 31714), (606, 29673), (707, 25434), (909, 19782), (942, 19089), (1099, 16362), (1134, 15857), (1413, 12726), (1414, 12717), (1818, 9891), (2121, 8478), (2198, 8181), (2727, 6594), (2826, 6363), (3297, 5454), (4239, 4242)]