253446400

素因数分解:

$2^8\times 5^2\times {\mathrm{199}}^2$

素因数の和:424

約数の個数: 81

約数和(自身を含む): 630487641

約数和(自身を除く): 377041241

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 199, 200, 256, 320, 398, 400, 640, 796, 800, 995, 1280, 1592, 1600, 1990, 3184, 3200, 3980, 4975, 6368, 6400, 7960, 9950, 12736, 15920, 19900, 25472, 31840, 39601, 39800, 50944, 63680, 79202, 79600, 127360, 158404, 159200, 198005, 254720, 316808, 318400, 396010, 633616, 636800, 792020, 990025, 1267232, 1273600, 1584040, 1980050, 2534464, 3168080, 3960100, 5068928, 6336160, 7920200, 10137856, 12672320, 15840400, 25344640, 31680800, 50689280, 63361600, 126723200, 253446400]

約数ペア:

[(1, 253446400), (2, 126723200), (4, 63361600), (5, 50689280), (8, 31680800), (10, 25344640), (16, 15840400), (20, 12672320), (25, 10137856), (32, 7920200), (40, 6336160), (50, 5068928), (64, 3960100), (80, 3168080), (100, 2534464), (128, 1980050), (160, 1584040), (199, 1273600), (200, 1267232), (256, 990025), (320, 792020), (398, 636800), (400, 633616), (640, 396010), (796, 318400), (800, 316808), (995, 254720), (1280, 198005), (1592, 159200), (1600, 158404), (1990, 127360), (3184, 79600), (3200, 79202), (3980, 63680), (4975, 50944), (6368, 39800), (6400, 39601), (7960, 31840), (9950, 25472), (12736, 19900)]