28453840

素因数分解:

$2^4\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1987}}^1$

素因数の和:2179

約数の個数: 40

約数和(自身を含む): 66558240

約数和(自身を除く): 38104400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 179, 358, 716, 895, 1432, 1790, 1987, 2864, 3580, 3974, 7160, 7948, 9935, 14320, 15896, 19870, 31792, 39740, 79480, 158960, 355673, 711346, 1422692, 1778365, 2845384, 3556730, 5690768, 7113460, 14226920, 28453840]

約数ペア:

[(1, 28453840), (2, 14226920), (4, 7113460), (5, 5690768), (8, 3556730), (10, 2845384), (16, 1778365), (20, 1422692), (40, 711346), (80, 355673), (179, 158960), (358, 79480), (716, 39740), (895, 31792), (1432, 19870), (1790, 15896), (1987, 14320), (2864, 9935), (3580, 7948), (3974, 7160)]