21835840

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:240

約数の個数: 112

約数和(自身を含む): 58247280

約数和(自身を除く): 36411440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 29, 32, 40, 52, 58, 64, 65, 80, 104, 116, 130, 145, 160, 181, 208, 232, 260, 290, 320, 362, 377, 416, 464, 520, 580, 724, 754, 832, 905, 928, 1040, 1160, 1448, 1508, 1810, 1856, 1885, 2080, 2320, 2353, 2896, 3016, 3620, 3770, 4160, 4640, 4706, 5249, 5792, 6032, 7240, 7540, 9280, 9412, 10498, 11584, 11765, 12064, 14480, 15080, 18824, 20996, 23530, 24128, 26245, 28960, 30160, 37648, 41992, 47060, 52490, 57920, 60320, 68237, 75296, 83984, 94120, 104980, 120640, 136474, 150592, 167968, 188240, 209960, 272948, 335936, 341185, 376480, 419920, 545896, 682370, 752960, 839840, 1091792, 1364740, 1679680, 2183584, 2729480, 4367168, 5458960, 10917920, 21835840]

約数ペア:

[(1, 21835840), (2, 10917920), (4, 5458960), (5, 4367168), (8, 2729480), (10, 2183584), (13, 1679680), (16, 1364740), (20, 1091792), (26, 839840), (29, 752960), (32, 682370), (40, 545896), (52, 419920), (58, 376480), (64, 341185), (65, 335936), (80, 272948), (104, 209960), (116, 188240), (130, 167968), (145, 150592), (160, 136474), (181, 120640), (208, 104980), (232, 94120), (260, 83984), (290, 75296), (320, 68237), (362, 60320), (377, 57920), (416, 52490), (464, 47060), (520, 41992), (580, 37648), (724, 30160), (754, 28960), (832, 26245), (905, 24128), (928, 23530), (1040, 20996), (1160, 18824), (1448, 15080), (1508, 14480), (1810, 12064), (1856, 11765), (1885, 11584), (2080, 10498), (2320, 9412), (2353, 9280), (2896, 7540), (3016, 7240), (3620, 6032), (3770, 5792), (4160, 5249), (4640, 4706)]