77438740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{421}}^1\times {\mathrm{541}}^1$

素因数の和:988

約数の個数: 48

約数和(自身を含む): 172915344

約数和(自身を除く): 95476604

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 421, 541, 842, 1082, 1684, 2105, 2164, 2705, 4210, 5410, 7157, 8420, 9197, 10820, 14314, 18394, 28628, 35785, 36788, 45985, 71570, 91970, 143140, 183940, 227761, 455522, 911044, 1138805, 2277610, 3871937, 4555220, 7743874, 15487748, 19359685, 38719370, 77438740]

約数ペア:

[(1, 77438740), (2, 38719370), (4, 19359685), (5, 15487748), (10, 7743874), (17, 4555220), (20, 3871937), (34, 2277610), (68, 1138805), (85, 911044), (170, 455522), (340, 227761), (421, 183940), (541, 143140), (842, 91970), (1082, 71570), (1684, 45985), (2105, 36788), (2164, 35785), (2705, 28628), (4210, 18394), (5410, 14314), (7157, 10820), (8420, 9197)]