21322496

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 47216400

約数和(自身を除く): 25893904

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 43, 52, 64, 86, 104, 128, 149, 172, 208, 256, 298, 344, 416, 559, 596, 688, 832, 1118, 1192, 1376, 1664, 1937, 2236, 2384, 2752, 3328, 3874, 4472, 4768, 5504, 6407, 7748, 8944, 9536, 11008, 12814, 15496, 17888, 19072, 25628, 30992, 35776, 38144, 51256, 61984, 71552, 83291, 102512, 123968, 143104, 166582, 205024, 247936, 333164, 410048, 495872, 666328, 820096, 1332656, 1640192, 2665312, 5330624, 10661248, 21322496]

約数ペア:

[(1, 21322496), (2, 10661248), (4, 5330624), (8, 2665312), (13, 1640192), (16, 1332656), (26, 820096), (32, 666328), (43, 495872), (52, 410048), (64, 333164), (86, 247936), (104, 205024), (128, 166582), (149, 143104), (172, 123968), (208, 102512), (256, 83291), (298, 71552), (344, 61984), (416, 51256), (559, 38144), (596, 35776), (688, 30992), (832, 25628), (1118, 19072), (1192, 17888), (1376, 15496), (1664, 12814), (1937, 11008), (2236, 9536), (2384, 8944), (2752, 7748), (3328, 6407), (3874, 5504), (4472, 4768)]