20881848

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:197

約数の個数: 128

約数和(自身を含む): 61931520

約数和(自身を除く): 41049672

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 17, 24, 26, 31, 34, 39, 51, 52, 62, 68, 78, 93, 102, 104, 124, 127, 136, 156, 186, 204, 221, 248, 254, 312, 372, 381, 403, 408, 442, 508, 527, 663, 744, 762, 806, 884, 1016, 1054, 1209, 1326, 1524, 1581, 1612, 1651, 1768, 2108, 2159, 2418, 2652, 3048, 3162, 3224, 3302, 3937, 4216, 4318, 4836, 4953, 5304, 6324, 6477, 6604, 6851, 7874, 8636, 9672, 9906, 11811, 12648, 12954, 13208, 13702, 15748, 17272, 19812, 20553, 23622, 25908, 27404, 28067, 31496, 39624, 41106, 47244, 51181, 51816, 54808, 56134, 66929, 82212, 84201, 94488, 102362, 112268, 133858, 153543, 164424, 168402, 200787, 204724, 224536, 267716, 307086, 336804, 401574, 409448, 535432, 614172, 673608, 803148, 870077, 1228344, 1606296, 1740154, 2610231, 3480308, 5220462, 6960616, 10440924, 20881848]

約数ペア:

[(1, 20881848), (2, 10440924), (3, 6960616), (4, 5220462), (6, 3480308), (8, 2610231), (12, 1740154), (13, 1606296), (17, 1228344), (24, 870077), (26, 803148), (31, 673608), (34, 614172), (39, 535432), (51, 409448), (52, 401574), (62, 336804), (68, 307086), (78, 267716), (93, 224536), (102, 204724), (104, 200787), (124, 168402), (127, 164424), (136, 153543), (156, 133858), (186, 112268), (204, 102362), (221, 94488), (248, 84201), (254, 82212), (312, 66929), (372, 56134), (381, 54808), (403, 51816), (408, 51181), (442, 47244), (508, 41106), (527, 39624), (663, 31496), (744, 28067), (762, 27404), (806, 25908), (884, 23622), (1016, 20553), (1054, 19812), (1209, 17272), (1326, 15748), (1524, 13702), (1581, 13208), (1612, 12954), (1651, 12648), (1768, 11811), (2108, 9906), (2159, 9672), (2418, 8636), (2652, 7874), (3048, 6851), (3162, 6604), (3224, 6477), (3302, 6324), (3937, 5304), (4216, 4953), (4318, 4836)]