20287744

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:175

約数の個数: 72

約数和(自身を含む): 44068640

約数和(自身を除く): 23780896

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 43, 64, 76, 86, 97, 128, 152, 172, 194, 256, 304, 344, 388, 608, 688, 776, 817, 1216, 1376, 1552, 1634, 1843, 2432, 2752, 3104, 3268, 3686, 4171, 4864, 5504, 6208, 6536, 7372, 8342, 11008, 12416, 13072, 14744, 16684, 24832, 26144, 29488, 33368, 52288, 58976, 66736, 79249, 104576, 117952, 133472, 158498, 209152, 235904, 266944, 316996, 471808, 533888, 633992, 1067776, 1267984, 2535968, 5071936, 10143872, 20287744]

約数ペア:

[(1, 20287744), (2, 10143872), (4, 5071936), (8, 2535968), (16, 1267984), (19, 1067776), (32, 633992), (38, 533888), (43, 471808), (64, 316996), (76, 266944), (86, 235904), (97, 209152), (128, 158498), (152, 133472), (172, 117952), (194, 104576), (256, 79249), (304, 66736), (344, 58976), (388, 52288), (608, 33368), (688, 29488), (776, 26144), (817, 24832), (1216, 16684), (1376, 14744), (1552, 13072), (1634, 12416), (1843, 11008), (2432, 8342), (2752, 7372), (3104, 6536), (3268, 6208), (3686, 5504), (4171, 4864)]