19808208

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{457}}^1$

素因数の和:521

約数の個数: 120

約数和(自身を含む): 64970048

約数和(自身を除く): 45161840

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 43, 48, 56, 63, 72, 84, 86, 112, 126, 129, 144, 168, 172, 252, 258, 301, 336, 344, 387, 457, 504, 516, 602, 688, 774, 903, 914, 1008, 1032, 1204, 1371, 1548, 1806, 1828, 2064, 2408, 2709, 2742, 3096, 3199, 3612, 3656, 4113, 4816, 5418, 5484, 6192, 6398, 7224, 7312, 8226, 9597, 10836, 10968, 12796, 14448, 16452, 19194, 19651, 21672, 21936, 25592, 28791, 32904, 38388, 39302, 43344, 51184, 57582, 58953, 65808, 76776, 78604, 115164, 117906, 137557, 153552, 157208, 176859, 230328, 235812, 275114, 314416, 353718, 412671, 460656, 471624, 550228, 707436, 825342, 943248, 1100456, 1238013, 1414872, 1650684, 2200912, 2476026, 2829744, 3301368, 4952052, 6602736, 9904104, 19808208]

約数ペア:

[(1, 19808208), (2, 9904104), (3, 6602736), (4, 4952052), (6, 3301368), (7, 2829744), (8, 2476026), (9, 2200912), (12, 1650684), (14, 1414872), (16, 1238013), (18, 1100456), (21, 943248), (24, 825342), (28, 707436), (36, 550228), (42, 471624), (43, 460656), (48, 412671), (56, 353718), (63, 314416), (72, 275114), (84, 235812), (86, 230328), (112, 176859), (126, 157208), (129, 153552), (144, 137557), (168, 117906), (172, 115164), (252, 78604), (258, 76776), (301, 65808), (336, 58953), (344, 57582), (387, 51184), (457, 43344), (504, 39302), (516, 38388), (602, 32904), (688, 28791), (774, 25592), (903, 21936), (914, 21672), (1008, 19651), (1032, 19194), (1204, 16452), (1371, 14448), (1548, 12796), (1806, 10968), (1828, 10836), (2064, 9597), (2408, 8226), (2709, 7312), (2742, 7224), (3096, 6398), (3199, 6192), (3612, 5484), (3656, 5418), (4113, 4816)]