280564336

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:223

約数の個数: 120

約数和(自身を含む): 639006720

約数和(自身を除く): 358442384

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 43, 52, 76, 86, 104, 127, 152, 169, 172, 208, 247, 254, 304, 338, 344, 494, 508, 559, 676, 688, 817, 988, 1016, 1118, 1352, 1634, 1651, 1976, 2032, 2236, 2413, 2704, 3211, 3268, 3302, 3952, 4472, 4826, 5461, 6422, 6536, 6604, 7267, 8944, 9652, 10621, 10922, 12844, 13072, 13208, 14534, 19304, 21242, 21463, 21844, 25688, 26416, 29068, 31369, 38608, 42484, 42926, 43688, 51376, 58136, 62738, 70993, 84968, 85852, 87376, 103759, 116272, 125476, 138073, 141986, 169936, 171704, 207518, 250952, 276146, 283972, 343408, 407797, 415036, 501904, 552292, 567944, 815594, 830072, 922909, 1104584, 1135888, 1348867, 1631188, 1660144, 1845818, 2209168, 2697734, 3262376, 3691636, 5395468, 6524752, 7383272, 10790936, 14766544, 17535271, 21581872, 35070542, 70141084, 140282168, 280564336]

約数ペア:

[(1, 280564336), (2, 140282168), (4, 70141084), (8, 35070542), (13, 21581872), (16, 17535271), (19, 14766544), (26, 10790936), (38, 7383272), (43, 6524752), (52, 5395468), (76, 3691636), (86, 3262376), (104, 2697734), (127, 2209168), (152, 1845818), (169, 1660144), (172, 1631188), (208, 1348867), (247, 1135888), (254, 1104584), (304, 922909), (338, 830072), (344, 815594), (494, 567944), (508, 552292), (559, 501904), (676, 415036), (688, 407797), (817, 343408), (988, 283972), (1016, 276146), (1118, 250952), (1352, 207518), (1634, 171704), (1651, 169936), (1976, 141986), (2032, 138073), (2236, 125476), (2413, 116272), (2704, 103759), (3211, 87376), (3268, 85852), (3302, 84968), (3952, 70993), (4472, 62738), (4826, 58136), (5461, 51376), (6422, 43688), (6536, 42926), (6604, 42484), (7267, 38608), (8944, 31369), (9652, 29068), (10621, 26416), (10922, 25688), (12844, 21844), (13072, 21463), (13208, 21242), (14534, 19304)]