208775216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:370

約数の個数: 80

約数和(自身を含む): 450471168

約数和(自身を除く): 241695952

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 67, 71, 104, 134, 142, 208, 211, 268, 284, 422, 536, 568, 844, 871, 923, 1072, 1136, 1688, 1742, 1846, 2743, 3376, 3484, 3692, 4757, 5486, 6968, 7384, 9514, 10972, 13936, 14137, 14768, 14981, 19028, 21944, 28274, 29962, 38056, 43888, 56548, 59924, 61841, 76112, 113096, 119848, 123682, 183781, 194753, 226192, 239696, 247364, 367562, 389506, 494728, 735124, 779012, 989456, 1003727, 1470248, 1558024, 2007454, 2940496, 3116048, 4014908, 8029816, 13048451, 16059632, 26096902, 52193804, 104387608, 208775216]

約数ペア:

[(1, 208775216), (2, 104387608), (4, 52193804), (8, 26096902), (13, 16059632), (16, 13048451), (26, 8029816), (52, 4014908), (67, 3116048), (71, 2940496), (104, 2007454), (134, 1558024), (142, 1470248), (208, 1003727), (211, 989456), (268, 779012), (284, 735124), (422, 494728), (536, 389506), (568, 367562), (844, 247364), (871, 239696), (923, 226192), (1072, 194753), (1136, 183781), (1688, 123682), (1742, 119848), (1846, 113096), (2743, 76112), (3376, 61841), (3484, 59924), (3692, 56548), (4757, 43888), (5486, 38056), (6968, 29962), (7384, 28274), (9514, 21944), (10972, 19028), (13936, 14981), (14137, 14768)]