19997994

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1$

素因数の和:339

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 25621206

約数列:

[1, 2, 3, 6, 19, 23, 29, 38, 46, 57, 58, 69, 87, 114, 138, 174, 263, 437, 526, 551, 667, 789, 874, 1102, 1311, 1334, 1578, 1653, 2001, 2622, 3306, 4002, 4997, 6049, 7627, 9994, 12098, 12673, 14991, 15254, 18147, 22881, 25346, 29982, 36294, 38019, 45762, 76038, 114931, 144913, 175421, 229862, 289826, 344793, 350842, 434739, 526263, 689586, 869478, 1052526, 3332999, 6665998, 9998997, 19997994]

約数ペア:

[(1, 19997994), (2, 9998997), (3, 6665998), (6, 3332999), (19, 1052526), (23, 869478), (29, 689586), (38, 526263), (46, 434739), (57, 350842), (58, 344793), (69, 289826), (87, 229862), (114, 175421), (138, 144913), (174, 114931), (263, 76038), (437, 45762), (526, 38019), (551, 36294), (667, 29982), (789, 25346), (874, 22881), (1102, 18147), (1311, 15254), (1334, 14991), (1578, 12673), (1653, 12098), (2001, 9994), (2622, 7627), (3306, 6049), (4002, 4997)]