128729840

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{55487}}^1$

素因数の和:55529

約数の個数: 40

約数和(自身を含む): 309623040

約数和(自身を除く): 180893200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 55487, 110974, 221948, 277435, 443896, 554870, 887792, 1109740, 1609123, 2219480, 3218246, 4438960, 6436492, 8045615, 12872984, 16091230, 25745968, 32182460, 64364920, 128729840]

約数ペア:

[(1, 128729840), (2, 64364920), (4, 32182460), (5, 25745968), (8, 16091230), (10, 12872984), (16, 8045615), (20, 6436492), (29, 4438960), (40, 3218246), (58, 2219480), (80, 1609123), (116, 1109740), (145, 887792), (232, 554870), (290, 443896), (464, 277435), (580, 221948), (1160, 110974), (2320, 55487)]