20001006

素因数分解:

$2^1\times 3^4\times {\mathrm{331}}^1\times {\mathrm{373}}^1$

素因数の和:718

約数の個数: 40

約数和(自身を含む): 45072984

約数和(自身を除く): 25071978

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 331, 373, 662, 746, 993, 1119, 1986, 2238, 2979, 3357, 5958, 6714, 8937, 10071, 17874, 20142, 26811, 30213, 53622, 60426, 123463, 246926, 370389, 740778, 1111167, 2222334, 3333501, 6667002, 10000503, 20001006]

約数ペア:

[(1, 20001006), (2, 10000503), (3, 6667002), (6, 3333501), (9, 2222334), (18, 1111167), (27, 740778), (54, 370389), (81, 246926), (162, 123463), (331, 60426), (373, 53622), (662, 30213), (746, 26811), (993, 20142), (1119, 17874), (1986, 10071), (2238, 8937), (2979, 6714), (3357, 5958)]