405514240

素因数分解:

$2^{11}\times 5^1\times {\mathrm{199}}^2$

素因数の和:425

約数の個数: 72

約数和(自身を含む): 977910570

約数和(自身を除く): 572396330

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 199, 256, 320, 398, 512, 640, 796, 995, 1024, 1280, 1592, 1990, 2048, 2560, 3184, 3980, 5120, 6368, 7960, 10240, 12736, 15920, 25472, 31840, 39601, 50944, 63680, 79202, 101888, 127360, 158404, 198005, 203776, 254720, 316808, 396010, 407552, 509440, 633616, 792020, 1018880, 1267232, 1584040, 2037760, 2534464, 3168080, 5068928, 6336160, 10137856, 12672320, 20275712, 25344640, 40551424, 50689280, 81102848, 101378560, 202757120, 405514240]

約数ペア:

[(1, 405514240), (2, 202757120), (4, 101378560), (5, 81102848), (8, 50689280), (10, 40551424), (16, 25344640), (20, 20275712), (32, 12672320), (40, 10137856), (64, 6336160), (80, 5068928), (128, 3168080), (160, 2534464), (199, 2037760), (256, 1584040), (320, 1267232), (398, 1018880), (512, 792020), (640, 633616), (796, 509440), (995, 407552), (1024, 396010), (1280, 316808), (1592, 254720), (1990, 203776), (2048, 198005), (2560, 158404), (3184, 127360), (3980, 101888), (5120, 79202), (6368, 63680), (7960, 50944), (10240, 39601), (12736, 31840), (15920, 25472)]