10988780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 25401600

約数和(自身を除く): 14412820

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 199, 220, 251, 398, 502, 796, 995, 1004, 1255, 1990, 2189, 2510, 2761, 3980, 4378, 5020, 5522, 8756, 10945, 11044, 13805, 21890, 27610, 43780, 49949, 55220, 99898, 199796, 249745, 499490, 549439, 998980, 1098878, 2197756, 2747195, 5494390, 10988780]

約数ペア:

[(1, 10988780), (2, 5494390), (4, 2747195), (5, 2197756), (10, 1098878), (11, 998980), (20, 549439), (22, 499490), (44, 249745), (55, 199796), (110, 99898), (199, 55220), (220, 49949), (251, 43780), (398, 27610), (502, 21890), (796, 13805), (995, 11044), (1004, 10945), (1255, 8756), (1990, 5522), (2189, 5020), (2510, 4378), (2761, 3980)]