19997952

素因数分解:

$2^8\times 3^1\times {\mathrm{13}}^1\times {\mathrm{2003}}^1$

素因数の和:2035

約数の個数: 72

約数和(自身を含む): 57346464

約数和(自身を除く): 37348512

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 64, 78, 96, 104, 128, 156, 192, 208, 256, 312, 384, 416, 624, 768, 832, 1248, 1664, 2003, 2496, 3328, 4006, 4992, 6009, 8012, 9984, 12018, 16024, 24036, 26039, 32048, 48072, 52078, 64096, 78117, 96144, 104156, 128192, 156234, 192288, 208312, 256384, 312468, 384576, 416624, 512768, 624936, 769152, 833248, 1249872, 1538304, 1666496, 2499744, 3332992, 4999488, 6665984, 9998976, 19997952]

約数ペア:

[(1, 19997952), (2, 9998976), (3, 6665984), (4, 4999488), (6, 3332992), (8, 2499744), (12, 1666496), (13, 1538304), (16, 1249872), (24, 833248), (26, 769152), (32, 624936), (39, 512768), (48, 416624), (52, 384576), (64, 312468), (78, 256384), (96, 208312), (104, 192288), (128, 156234), (156, 128192), (192, 104156), (208, 96144), (256, 78117), (312, 64096), (384, 52078), (416, 48072), (624, 32048), (768, 26039), (832, 24036), (1248, 16024), (1664, 12018), (2003, 9984), (2496, 8012), (3328, 6009), (4006, 4992)]