19904579968

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89939}}^1$

素因数の和:89992

約数の個数: 128

約数和(自身を含む): 51373728000

約数和(自身を除く): 31469148032

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 32, 38, 52, 56, 64, 76, 91, 104, 112, 128, 133, 152, 182, 208, 224, 247, 266, 304, 364, 416, 448, 494, 532, 608, 728, 832, 896, 988, 1064, 1216, 1456, 1664, 1729, 1976, 2128, 2432, 2912, 3458, 3952, 4256, 5824, 6916, 7904, 8512, 11648, 13832, 15808, 17024, 27664, 31616, 55328, 89939, 110656, 179878, 221312, 359756, 629573, 719512, 1169207, 1259146, 1439024, 1708841, 2338414, 2518292, 2878048, 3417682, 4676828, 5036584, 5756096, 6835364, 8184449, 9353656, 10073168, 11512192, 11961887, 13670728, 16368898, 18707312, 20146336, 22214933, 23923774, 27341456, 32737796, 37414624, 40292672, 44429866, 47847548, 54682912, 65475592, 74829248, 80585344, 88859732, 95695096, 109365824, 130951184, 149658496, 155504531, 177719464, 191390192, 218731648, 261902368, 311009062, 355438928, 382780384, 523804736, 622018124, 710877856, 765560768, 1047609472, 1244036248, 1421755712, 1531121536, 2488072496, 2843511424, 4976144992, 9952289984, 19904579968]

約数ペア:

[(1, 19904579968), (2, 9952289984), (4, 4976144992), (7, 2843511424), (8, 2488072496), (13, 1531121536), (14, 1421755712), (16, 1244036248), (19, 1047609472), (26, 765560768), (28, 710877856), (32, 622018124), (38, 523804736), (52, 382780384), (56, 355438928), (64, 311009062), (76, 261902368), (91, 218731648), (104, 191390192), (112, 177719464), (128, 155504531), (133, 149658496), (152, 130951184), (182, 109365824), (208, 95695096), (224, 88859732), (247, 80585344), (266, 74829248), (304, 65475592), (364, 54682912), (416, 47847548), (448, 44429866), (494, 40292672), (532, 37414624), (608, 32737796), (728, 27341456), (832, 23923774), (896, 22214933), (988, 20146336), (1064, 18707312), (1216, 16368898), (1456, 13670728), (1664, 11961887), (1729, 11512192), (1976, 10073168), (2128, 9353656), (2432, 8184449), (2912, 6835364), (3458, 5756096), (3952, 5036584), (4256, 4676828), (5824, 3417682), (6916, 2878048), (7904, 2518292), (8512, 2338414), (11648, 1708841), (13832, 1439024), (15808, 1259146), (17024, 1169207), (27664, 719512), (31616, 629573), (55328, 359756), (89939, 221312), (110656, 179878)]