21047936

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^2\times {\mathrm{139}}^1$

素因数の和:186

約数の個数: 96

約数和(自身を含む): 52264800

約数和(自身を除く): 31216864

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 139, 169, 182, 208, 224, 278, 338, 364, 416, 448, 556, 676, 728, 832, 896, 973, 1112, 1183, 1352, 1456, 1664, 1807, 1946, 2224, 2366, 2704, 2912, 3614, 3892, 4448, 4732, 5408, 5824, 7228, 7784, 8896, 9464, 10816, 11648, 12649, 14456, 15568, 17792, 18928, 21632, 23491, 25298, 28912, 31136, 37856, 46982, 50596, 57824, 62272, 75712, 93964, 101192, 115648, 124544, 151424, 164437, 187928, 202384, 231296, 328874, 375856, 404768, 657748, 751712, 809536, 1315496, 1503424, 1619072, 2630992, 3006848, 5261984, 10523968, 21047936]

約数ペア:

[(1, 21047936), (2, 10523968), (4, 5261984), (7, 3006848), (8, 2630992), (13, 1619072), (14, 1503424), (16, 1315496), (26, 809536), (28, 751712), (32, 657748), (52, 404768), (56, 375856), (64, 328874), (91, 231296), (104, 202384), (112, 187928), (128, 164437), (139, 151424), (169, 124544), (182, 115648), (208, 101192), (224, 93964), (278, 75712), (338, 62272), (364, 57824), (416, 50596), (448, 46982), (556, 37856), (676, 31136), (728, 28912), (832, 25298), (896, 23491), (973, 21632), (1112, 18928), (1183, 17792), (1352, 15568), (1456, 14456), (1664, 12649), (1807, 11648), (1946, 10816), (2224, 9464), (2366, 8896), (2704, 7784), (2912, 7228), (3614, 5824), (3892, 5408), (4448, 4732)]