20781696

素因数分解:

$2^7\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1$

素因数の和:234

約数の個数: 128

約数和(自身を含む): 62375040

約数和(自身を除く): 41593344

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 23, 24, 26, 32, 39, 46, 48, 52, 64, 69, 78, 92, 96, 104, 128, 138, 156, 181, 184, 192, 208, 276, 299, 312, 362, 368, 384, 416, 543, 552, 598, 624, 724, 736, 832, 897, 1086, 1104, 1196, 1248, 1448, 1472, 1664, 1794, 2172, 2208, 2353, 2392, 2496, 2896, 2944, 3588, 4163, 4344, 4416, 4706, 4784, 4992, 5792, 7059, 7176, 8326, 8688, 8832, 9412, 9568, 11584, 12489, 14118, 14352, 16652, 17376, 18824, 19136, 23168, 24978, 28236, 28704, 33304, 34752, 37648, 38272, 49956, 54119, 56472, 57408, 66608, 69504, 75296, 99912, 108238, 112944, 114816, 133216, 150592, 162357, 199824, 216476, 225888, 266432, 301184, 324714, 399648, 432952, 451776, 532864, 649428, 799296, 865904, 903552, 1298856, 1598592, 1731808, 2597712, 3463616, 5195424, 6927232, 10390848, 20781696]

約数ペア:

[(1, 20781696), (2, 10390848), (3, 6927232), (4, 5195424), (6, 3463616), (8, 2597712), (12, 1731808), (13, 1598592), (16, 1298856), (23, 903552), (24, 865904), (26, 799296), (32, 649428), (39, 532864), (46, 451776), (48, 432952), (52, 399648), (64, 324714), (69, 301184), (78, 266432), (92, 225888), (96, 216476), (104, 199824), (128, 162357), (138, 150592), (156, 133216), (181, 114816), (184, 112944), (192, 108238), (208, 99912), (276, 75296), (299, 69504), (312, 66608), (362, 57408), (368, 56472), (384, 54119), (416, 49956), (543, 38272), (552, 37648), (598, 34752), (624, 33304), (724, 28704), (736, 28236), (832, 24978), (897, 23168), (1086, 19136), (1104, 18824), (1196, 17376), (1248, 16652), (1448, 14352), (1472, 14118), (1664, 12489), (1794, 11584), (2172, 9568), (2208, 9412), (2353, 8832), (2392, 8688), (2496, 8326), (2896, 7176), (2944, 7059), (3588, 5792), (4163, 4992), (4344, 4784), (4416, 4706)]