20873216

素因数分解:

$2^{15}\times 7^2\times {\mathrm{13}}^1$

素因数の和:57

約数の個数: 96

約数和(自身を含む): 52296930

約数和(自身を除く): 31423714

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 49, 52, 56, 64, 91, 98, 104, 112, 128, 182, 196, 208, 224, 256, 364, 392, 416, 448, 512, 637, 728, 784, 832, 896, 1024, 1274, 1456, 1568, 1664, 1792, 2048, 2548, 2912, 3136, 3328, 3584, 4096, 5096, 5824, 6272, 6656, 7168, 8192, 10192, 11648, 12544, 13312, 14336, 16384, 20384, 23296, 25088, 26624, 28672, 32768, 40768, 46592, 50176, 53248, 57344, 81536, 93184, 100352, 106496, 114688, 163072, 186368, 200704, 212992, 229376, 326144, 372736, 401408, 425984, 652288, 745472, 802816, 1304576, 1490944, 1605632, 2609152, 2981888, 5218304, 10436608, 20873216]

約数ペア:

[(1, 20873216), (2, 10436608), (4, 5218304), (7, 2981888), (8, 2609152), (13, 1605632), (14, 1490944), (16, 1304576), (26, 802816), (28, 745472), (32, 652288), (49, 425984), (52, 401408), (56, 372736), (64, 326144), (91, 229376), (98, 212992), (104, 200704), (112, 186368), (128, 163072), (182, 114688), (196, 106496), (208, 100352), (224, 93184), (256, 81536), (364, 57344), (392, 53248), (416, 50176), (448, 46592), (512, 40768), (637, 32768), (728, 28672), (784, 26624), (832, 25088), (896, 23296), (1024, 20384), (1274, 16384), (1456, 14336), (1568, 13312), (1664, 12544), (1792, 11648), (2048, 10192), (2548, 8192), (2912, 7168), (3136, 6656), (3328, 6272), (3584, 5824), (4096, 5096)]