128219680

素因数分解:

$2^5\times 5^1\times {\mathrm{199}}^1\times {\mathrm{4027}}^1$

素因数の和:4241

約数の個数: 48

約数和(自身を含む): 304516800

約数和(自身を除く): 176297120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 4027, 6368, 7960, 8054, 15920, 16108, 20135, 31840, 32216, 40270, 64432, 80540, 128864, 161080, 322160, 644320, 801373, 1602746, 3205492, 4006865, 6410984, 8013730, 12821968, 16027460, 25643936, 32054920, 64109840, 128219680]

約数ペア:

[(1, 128219680), (2, 64109840), (4, 32054920), (5, 25643936), (8, 16027460), (10, 12821968), (16, 8013730), (20, 6410984), (32, 4006865), (40, 3205492), (80, 1602746), (160, 801373), (199, 644320), (398, 322160), (796, 161080), (995, 128864), (1592, 80540), (1990, 64432), (3184, 40270), (3980, 32216), (4027, 31840), (6368, 20135), (7960, 16108), (8054, 15920)]