216973568

素因数分解:

$2^8\times 7^4\times {\mathrm{353}}^1$

素因数の和:397

約数の個数: 90

約数和(自身を含む): 506684094

約数和(自身を除く): 289710526

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 256, 343, 353, 392, 448, 686, 706, 784, 896, 1372, 1412, 1568, 1792, 2401, 2471, 2744, 2824, 3136, 4802, 4942, 5488, 5648, 6272, 9604, 9884, 10976, 11296, 12544, 17297, 19208, 19768, 21952, 22592, 34594, 38416, 39536, 43904, 45184, 69188, 76832, 79072, 87808, 90368, 121079, 138376, 153664, 158144, 242158, 276752, 307328, 316288, 484316, 553504, 614656, 632576, 847553, 968632, 1107008, 1695106, 1937264, 2214016, 3390212, 3874528, 4428032, 6780424, 7749056, 13560848, 15498112, 27121696, 30996224, 54243392, 108486784, 216973568]

約数ペア:

[(1, 216973568), (2, 108486784), (4, 54243392), (7, 30996224), (8, 27121696), (14, 15498112), (16, 13560848), (28, 7749056), (32, 6780424), (49, 4428032), (56, 3874528), (64, 3390212), (98, 2214016), (112, 1937264), (128, 1695106), (196, 1107008), (224, 968632), (256, 847553), (343, 632576), (353, 614656), (392, 553504), (448, 484316), (686, 316288), (706, 307328), (784, 276752), (896, 242158), (1372, 158144), (1412, 153664), (1568, 138376), (1792, 121079), (2401, 90368), (2471, 87808), (2744, 79072), (2824, 76832), (3136, 69188), (4802, 45184), (4942, 43904), (5488, 39536), (5648, 38416), (6272, 34594), (9604, 22592), (9884, 21952), (10976, 19768), (11296, 19208), (12544, 17297)]