19998426

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{757}}^1$

素因数の和:823

約数の個数: 64

約数和(自身を含む): 49773312

約数和(自身を除く): 29774886

約数列:

[1, 2, 3, 6, 7, 14, 17, 21, 34, 37, 42, 51, 74, 102, 111, 119, 222, 238, 259, 357, 518, 629, 714, 757, 777, 1258, 1514, 1554, 1887, 2271, 3774, 4403, 4542, 5299, 8806, 10598, 12869, 13209, 15897, 25738, 26418, 28009, 31794, 38607, 56018, 77214, 84027, 90083, 168054, 180166, 196063, 270249, 392126, 476153, 540498, 588189, 952306, 1176378, 1428459, 2856918, 3333071, 6666142, 9999213, 19998426]

約数ペア:

[(1, 19998426), (2, 9999213), (3, 6666142), (6, 3333071), (7, 2856918), (14, 1428459), (17, 1176378), (21, 952306), (34, 588189), (37, 540498), (42, 476153), (51, 392126), (74, 270249), (102, 196063), (111, 180166), (119, 168054), (222, 90083), (238, 84027), (259, 77214), (357, 56018), (518, 38607), (629, 31794), (714, 28009), (757, 26418), (777, 25738), (1258, 15897), (1514, 13209), (1554, 12869), (1887, 10598), (2271, 8806), (3774, 5299), (4403, 4542)]