128735600

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1999}}^1$

素因数の和:2047

約数の個数: 120

約数和(自身を含む): 369024000

約数和(自身を除く): 240288400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 25, 28, 35, 40, 46, 50, 56, 70, 80, 92, 100, 112, 115, 140, 161, 175, 184, 200, 230, 280, 322, 350, 368, 400, 460, 560, 575, 644, 700, 805, 920, 1150, 1288, 1400, 1610, 1840, 1999, 2300, 2576, 2800, 3220, 3998, 4025, 4600, 6440, 7996, 8050, 9200, 9995, 12880, 13993, 15992, 16100, 19990, 27986, 31984, 32200, 39980, 45977, 49975, 55972, 64400, 69965, 79960, 91954, 99950, 111944, 139930, 159920, 183908, 199900, 223888, 229885, 279860, 321839, 349825, 367816, 399800, 459770, 559720, 643678, 699650, 735632, 799600, 919540, 1119440, 1149425, 1287356, 1399300, 1609195, 1839080, 2298850, 2574712, 2798600, 3218390, 3678160, 4597700, 5149424, 5597200, 6436780, 8045975, 9195400, 12873560, 16091950, 18390800, 25747120, 32183900, 64367800, 128735600]

約数ペア:

[(1, 128735600), (2, 64367800), (4, 32183900), (5, 25747120), (7, 18390800), (8, 16091950), (10, 12873560), (14, 9195400), (16, 8045975), (20, 6436780), (23, 5597200), (25, 5149424), (28, 4597700), (35, 3678160), (40, 3218390), (46, 2798600), (50, 2574712), (56, 2298850), (70, 1839080), (80, 1609195), (92, 1399300), (100, 1287356), (112, 1149425), (115, 1119440), (140, 919540), (161, 799600), (175, 735632), (184, 699650), (200, 643678), (230, 559720), (280, 459770), (322, 399800), (350, 367816), (368, 349825), (400, 321839), (460, 279860), (560, 229885), (575, 223888), (644, 199900), (700, 183908), (805, 159920), (920, 139930), (1150, 111944), (1288, 99950), (1400, 91954), (1610, 79960), (1840, 69965), (1999, 64400), (2300, 55972), (2576, 49975), (2800, 45977), (3220, 39980), (3998, 32200), (4025, 31984), (4600, 27986), (6440, 19990), (7996, 16100), (8050, 15992), (9200, 13993), (9995, 12880)]