18979072

素因数分解:

$2^8\times 7^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:136

約数の個数: 108

約数和(自身を含む): 47185740

約数和(自身を除く): 28206668

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 49, 56, 64, 68, 89, 98, 112, 119, 128, 136, 178, 196, 224, 238, 256, 272, 356, 392, 448, 476, 544, 623, 712, 784, 833, 896, 952, 1088, 1246, 1424, 1513, 1568, 1666, 1792, 1904, 2176, 2492, 2848, 3026, 3136, 3332, 3808, 4352, 4361, 4984, 5696, 6052, 6272, 6664, 7616, 8722, 9968, 10591, 11392, 12104, 12544, 13328, 15232, 17444, 19936, 21182, 22784, 24208, 26656, 30464, 34888, 39872, 42364, 48416, 53312, 69776, 74137, 79744, 84728, 96832, 106624, 139552, 148274, 159488, 169456, 193664, 213248, 279104, 296548, 338912, 387328, 558208, 593096, 677824, 1116416, 1186192, 1355648, 2372384, 2711296, 4744768, 9489536, 18979072]

約数ペア:

[(1, 18979072), (2, 9489536), (4, 4744768), (7, 2711296), (8, 2372384), (14, 1355648), (16, 1186192), (17, 1116416), (28, 677824), (32, 593096), (34, 558208), (49, 387328), (56, 338912), (64, 296548), (68, 279104), (89, 213248), (98, 193664), (112, 169456), (119, 159488), (128, 148274), (136, 139552), (178, 106624), (196, 96832), (224, 84728), (238, 79744), (256, 74137), (272, 69776), (356, 53312), (392, 48416), (448, 42364), (476, 39872), (544, 34888), (623, 30464), (712, 26656), (784, 24208), (833, 22784), (896, 21182), (952, 19936), (1088, 17444), (1246, 15232), (1424, 13328), (1513, 12544), (1568, 12104), (1666, 11392), (1792, 10591), (1904, 9968), (2176, 8722), (2492, 7616), (2848, 6664), (3026, 6272), (3136, 6052), (3332, 5696), (3808, 4984), (4352, 4361)]