21281994

素因数分解:

$2^1\times 3^3\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{239}}^1$

素因数の和:364

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 29521206

約数列:

[1, 2, 3, 6, 9, 17, 18, 27, 34, 51, 54, 97, 102, 153, 194, 239, 291, 306, 459, 478, 582, 717, 873, 918, 1434, 1649, 1746, 2151, 2619, 3298, 4063, 4302, 4947, 5238, 6453, 8126, 9894, 12189, 12906, 14841, 23183, 24378, 29682, 36567, 44523, 46366, 69549, 73134, 89046, 109701, 139098, 208647, 219402, 394111, 417294, 625941, 788222, 1182333, 1251882, 2364666, 3546999, 7093998, 10640997, 21281994]

約数ペア:

[(1, 21281994), (2, 10640997), (3, 7093998), (6, 3546999), (9, 2364666), (17, 1251882), (18, 1182333), (27, 788222), (34, 625941), (51, 417294), (54, 394111), (97, 219402), (102, 208647), (153, 139098), (194, 109701), (239, 89046), (291, 73134), (306, 69549), (459, 46366), (478, 44523), (582, 36567), (717, 29682), (873, 24378), (918, 23183), (1434, 14841), (1649, 12906), (1746, 12189), (2151, 9894), (2619, 8126), (3298, 6453), (4063, 5238), (4302, 4947)]