20765784

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:185

約数の個数: 128

約数和(自身を含む): 61286400

約数和(自身を除く): 40520616

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 19, 24, 26, 31, 38, 39, 52, 57, 62, 76, 78, 93, 104, 113, 114, 124, 152, 156, 186, 226, 228, 247, 248, 312, 339, 372, 403, 452, 456, 494, 589, 678, 741, 744, 806, 904, 988, 1178, 1209, 1356, 1469, 1482, 1612, 1767, 1976, 2147, 2356, 2418, 2712, 2938, 2964, 3224, 3503, 3534, 4294, 4407, 4712, 4836, 5876, 5928, 6441, 7006, 7068, 7657, 8588, 8814, 9672, 10509, 11752, 12882, 14012, 14136, 15314, 17176, 17628, 21018, 22971, 25764, 27911, 28024, 30628, 35256, 42036, 45539, 45942, 51528, 55822, 61256, 66557, 83733, 84072, 91078, 91884, 111644, 133114, 136617, 167466, 182156, 183768, 199671, 223288, 266228, 273234, 334932, 364312, 399342, 532456, 546468, 669864, 798684, 865241, 1092936, 1597368, 1730482, 2595723, 3460964, 5191446, 6921928, 10382892, 20765784]

約数ペア:

[(1, 20765784), (2, 10382892), (3, 6921928), (4, 5191446), (6, 3460964), (8, 2595723), (12, 1730482), (13, 1597368), (19, 1092936), (24, 865241), (26, 798684), (31, 669864), (38, 546468), (39, 532456), (52, 399342), (57, 364312), (62, 334932), (76, 273234), (78, 266228), (93, 223288), (104, 199671), (113, 183768), (114, 182156), (124, 167466), (152, 136617), (156, 133114), (186, 111644), (226, 91884), (228, 91078), (247, 84072), (248, 83733), (312, 66557), (339, 61256), (372, 55822), (403, 51528), (452, 45942), (456, 45539), (494, 42036), (589, 35256), (678, 30628), (741, 28024), (744, 27911), (806, 25764), (904, 22971), (988, 21018), (1178, 17628), (1209, 17176), (1356, 15314), (1469, 14136), (1482, 14012), (1612, 12882), (1767, 11752), (1976, 10509), (2147, 9672), (2356, 8814), (2418, 8588), (2712, 7657), (2938, 7068), (2964, 7006), (3224, 6441), (3503, 5928), (3534, 5876), (4294, 4836), (4407, 4712)]