81039780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:274

約数の個数: 144

約数和(自身を含む): 256838400

約数和(自身を除く): 175798620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 41, 45, 60, 79, 82, 90, 123, 139, 158, 164, 180, 205, 237, 246, 278, 316, 369, 395, 410, 417, 474, 492, 556, 615, 695, 711, 738, 790, 820, 834, 948, 1185, 1230, 1251, 1390, 1422, 1476, 1580, 1668, 1845, 2085, 2370, 2460, 2502, 2780, 2844, 3239, 3555, 3690, 4170, 4740, 5004, 5699, 6255, 6478, 7110, 7380, 8340, 9717, 10981, 11398, 12510, 12956, 14220, 16195, 17097, 19434, 21962, 22796, 25020, 28495, 29151, 32390, 32943, 34194, 38868, 43924, 48585, 51291, 54905, 56990, 58302, 64780, 65886, 68388, 85485, 97170, 98829, 102582, 109810, 113980, 116604, 131772, 145755, 164715, 170970, 194340, 197658, 205164, 219620, 256455, 291510, 329430, 341940, 395316, 450221, 494145, 512910, 583020, 658860, 900442, 988290, 1025820, 1350663, 1800884, 1976580, 2251105, 2701326, 4051989, 4502210, 5402652, 6753315, 8103978, 9004420, 13506630, 16207956, 20259945, 27013260, 40519890, 81039780]

約数ペア:

[(1, 81039780), (2, 40519890), (3, 27013260), (4, 20259945), (5, 16207956), (6, 13506630), (9, 9004420), (10, 8103978), (12, 6753315), (15, 5402652), (18, 4502210), (20, 4051989), (30, 2701326), (36, 2251105), (41, 1976580), (45, 1800884), (60, 1350663), (79, 1025820), (82, 988290), (90, 900442), (123, 658860), (139, 583020), (158, 512910), (164, 494145), (180, 450221), (205, 395316), (237, 341940), (246, 329430), (278, 291510), (316, 256455), (369, 219620), (395, 205164), (410, 197658), (417, 194340), (474, 170970), (492, 164715), (556, 145755), (615, 131772), (695, 116604), (711, 113980), (738, 109810), (790, 102582), (820, 98829), (834, 97170), (948, 85485), (1185, 68388), (1230, 65886), (1251, 64780), (1390, 58302), (1422, 56990), (1476, 54905), (1580, 51291), (1668, 48585), (1845, 43924), (2085, 38868), (2370, 34194), (2460, 32943), (2502, 32390), (2780, 29151), (2844, 28495), (3239, 25020), (3555, 22796), (3690, 21962), (4170, 19434), (4740, 17097), (5004, 16195), (5699, 14220), (6255, 12956), (6478, 12510), (7110, 11398), (7380, 10981), (8340, 9717)]