1387400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{991}}^1$

素因数の和:1014

約数の個数: 48

約数和(自身を含む): 3690240

約数和(自身を除く): 2302840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 140, 175, 200, 280, 350, 700, 991, 1400, 1982, 3964, 4955, 6937, 7928, 9910, 13874, 19820, 24775, 27748, 34685, 39640, 49550, 55496, 69370, 99100, 138740, 173425, 198200, 277480, 346850, 693700, 1387400]

約数ペア:

[(1, 1387400), (2, 693700), (4, 346850), (5, 277480), (7, 198200), (8, 173425), (10, 138740), (14, 99100), (20, 69370), (25, 55496), (28, 49550), (35, 39640), (40, 34685), (50, 27748), (56, 24775), (70, 19820), (100, 13874), (140, 9910), (175, 7928), (200, 6937), (280, 4955), (350, 3964), (700, 1982), (991, 1400)]