31359440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1931}}^1$

素因数の和:1980

約数の個数: 80

約数和(自身を含む): 86244480

約数和(自身を除く): 54885040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 56, 58, 70, 80, 112, 116, 140, 145, 203, 232, 280, 290, 406, 464, 560, 580, 812, 1015, 1160, 1624, 1931, 2030, 2320, 3248, 3862, 4060, 7724, 8120, 9655, 13517, 15448, 16240, 19310, 27034, 30896, 38620, 54068, 55999, 67585, 77240, 108136, 111998, 135170, 154480, 216272, 223996, 270340, 279995, 391993, 447992, 540680, 559990, 783986, 895984, 1081360, 1119980, 1567972, 1959965, 2239960, 3135944, 3919930, 4479920, 6271888, 7839860, 15679720, 31359440]

約数ペア:

[(1, 31359440), (2, 15679720), (4, 7839860), (5, 6271888), (7, 4479920), (8, 3919930), (10, 3135944), (14, 2239960), (16, 1959965), (20, 1567972), (28, 1119980), (29, 1081360), (35, 895984), (40, 783986), (56, 559990), (58, 540680), (70, 447992), (80, 391993), (112, 279995), (116, 270340), (140, 223996), (145, 216272), (203, 154480), (232, 135170), (280, 111998), (290, 108136), (406, 77240), (464, 67585), (560, 55999), (580, 54068), (812, 38620), (1015, 30896), (1160, 27034), (1624, 19310), (1931, 16240), (2030, 15448), (2320, 13517), (3248, 9655), (3862, 8120), (4060, 7724)]