19990404

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3449}}^1$

素因数の和:3489

約数の個数: 72

約数和(自身を含む): 60278400

約数和(自身を除く): 40287996

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 23, 28, 36, 42, 46, 63, 69, 84, 92, 126, 138, 161, 207, 252, 276, 322, 414, 483, 644, 828, 966, 1449, 1932, 2898, 3449, 5796, 6898, 10347, 13796, 20694, 24143, 31041, 41388, 48286, 62082, 72429, 79327, 96572, 124164, 144858, 158654, 217287, 237981, 289716, 317308, 434574, 475962, 555289, 713943, 869148, 951924, 1110578, 1427886, 1665867, 2221156, 2855772, 3331734, 4997601, 6663468, 9995202, 19990404]

約数ペア:

[(1, 19990404), (2, 9995202), (3, 6663468), (4, 4997601), (6, 3331734), (7, 2855772), (9, 2221156), (12, 1665867), (14, 1427886), (18, 1110578), (21, 951924), (23, 869148), (28, 713943), (36, 555289), (42, 475962), (46, 434574), (63, 317308), (69, 289716), (84, 237981), (92, 217287), (126, 158654), (138, 144858), (161, 124164), (207, 96572), (252, 79327), (276, 72429), (322, 62082), (414, 48286), (483, 41388), (644, 31041), (828, 24143), (966, 20694), (1449, 13796), (1932, 10347), (2898, 6898), (3449, 5796)]