3999856

素因数分解:

$2^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{503}}^1$

素因数の和:589

約数の個数: 40

約数和(自身を含む): 8999424

約数和(自身を除く): 4999568

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 71, 112, 142, 284, 497, 503, 568, 994, 1006, 1136, 1988, 2012, 3521, 3976, 4024, 7042, 7952, 8048, 14084, 28168, 35713, 56336, 71426, 142852, 249991, 285704, 499982, 571408, 999964, 1999928, 3999856]

約数ペア:

[(1, 3999856), (2, 1999928), (4, 999964), (7, 571408), (8, 499982), (14, 285704), (16, 249991), (28, 142852), (56, 71426), (71, 56336), (112, 35713), (142, 28168), (284, 14084), (497, 8048), (503, 7952), (568, 7042), (994, 4024), (1006, 3976), (1136, 3521), (1988, 2012)]