20391984

素因数分解:

$2^4\times 3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:215

約数の個数: 120

約数和(自身を含む): 61281792

約数和(自身を除く): 40889808

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 36, 46, 47, 48, 69, 72, 92, 94, 131, 138, 141, 144, 184, 188, 207, 262, 276, 282, 368, 376, 393, 414, 423, 524, 552, 564, 752, 786, 828, 846, 1048, 1081, 1104, 1128, 1179, 1572, 1656, 1692, 2096, 2162, 2256, 2358, 3013, 3144, 3243, 3312, 3384, 4324, 4716, 6026, 6157, 6288, 6486, 6768, 8648, 9039, 9432, 9729, 12052, 12314, 12972, 17296, 18078, 18471, 18864, 19458, 24104, 24628, 25944, 27117, 36156, 36942, 38916, 48208, 49256, 51888, 54234, 55413, 72312, 73884, 77832, 98512, 108468, 110826, 141611, 144624, 147768, 155664, 216936, 221652, 283222, 295536, 424833, 433872, 443304, 566444, 849666, 886608, 1132888, 1274499, 1699332, 2265776, 2548998, 3398664, 5097996, 6797328, 10195992, 20391984]

約数ペア:

[(1, 20391984), (2, 10195992), (3, 6797328), (4, 5097996), (6, 3398664), (8, 2548998), (9, 2265776), (12, 1699332), (16, 1274499), (18, 1132888), (23, 886608), (24, 849666), (36, 566444), (46, 443304), (47, 433872), (48, 424833), (69, 295536), (72, 283222), (92, 221652), (94, 216936), (131, 155664), (138, 147768), (141, 144624), (144, 141611), (184, 110826), (188, 108468), (207, 98512), (262, 77832), (276, 73884), (282, 72312), (368, 55413), (376, 54234), (393, 51888), (414, 49256), (423, 48208), (524, 38916), (552, 36942), (564, 36156), (752, 27117), (786, 25944), (828, 24628), (846, 24104), (1048, 19458), (1081, 18864), (1104, 18471), (1128, 18078), (1179, 17296), (1572, 12972), (1656, 12314), (1692, 12052), (2096, 9729), (2162, 9432), (2256, 9039), (2358, 8648), (3013, 6768), (3144, 6486), (3243, 6288), (3312, 6157), (3384, 6026), (4324, 4716)]