18916866

素因数分解:

$2^1\times 3^2\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:391

約数の個数: 48

約数和(自身を含む): 42456960

約数和(自身を除く): 23540094

約数列:

[1, 2, 3, 6, 9, 18, 53, 79, 106, 158, 159, 237, 251, 318, 474, 477, 502, 711, 753, 954, 1422, 1506, 2259, 4187, 4518, 8374, 12561, 13303, 19829, 25122, 26606, 37683, 39658, 39909, 59487, 75366, 79818, 118974, 119727, 178461, 239454, 356922, 1050937, 2101874, 3152811, 6305622, 9458433, 18916866]

約数ペア:

[(1, 18916866), (2, 9458433), (3, 6305622), (6, 3152811), (9, 2101874), (18, 1050937), (53, 356922), (79, 239454), (106, 178461), (158, 119727), (159, 118974), (237, 79818), (251, 75366), (318, 59487), (474, 39909), (477, 39658), (502, 37683), (711, 26606), (753, 25122), (954, 19829), (1422, 13303), (1506, 12561), (2259, 8374), (4187, 4518)]