128949520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{563}}^1$

素因数の和:992

約数の個数: 80

約数和(自身を含む): 344085120

約数和(自身を除く): 215135600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 409, 560, 563, 818, 1126, 1636, 2045, 2252, 2815, 2863, 3272, 3941, 4090, 4504, 5630, 5726, 6544, 7882, 8180, 9008, 11260, 11452, 14315, 15764, 16360, 19705, 22520, 22904, 28630, 31528, 32720, 39410, 45040, 45808, 57260, 63056, 78820, 114520, 157640, 229040, 230267, 315280, 460534, 921068, 1151335, 1611869, 1842136, 2302670, 3223738, 3684272, 4605340, 6447476, 8059345, 9210680, 12894952, 16118690, 18421360, 25789904, 32237380, 64474760, 128949520]

約数ペア:

[(1, 128949520), (2, 64474760), (4, 32237380), (5, 25789904), (7, 18421360), (8, 16118690), (10, 12894952), (14, 9210680), (16, 8059345), (20, 6447476), (28, 4605340), (35, 3684272), (40, 3223738), (56, 2302670), (70, 1842136), (80, 1611869), (112, 1151335), (140, 921068), (280, 460534), (409, 315280), (560, 230267), (563, 229040), (818, 157640), (1126, 114520), (1636, 78820), (2045, 63056), (2252, 57260), (2815, 45808), (2863, 45040), (3272, 39410), (3941, 32720), (4090, 31528), (4504, 28630), (5630, 22904), (5726, 22520), (6544, 19705), (7882, 16360), (8180, 15764), (9008, 14315), (11260, 11452)]